Oprah Winfrey says that she left "60 Minutes" because the show "flattened my personality"

Oprah Winfrey, 1970s. (Photo by Film Favorites / Getty Images)

Oprah Winfrey smiles and gives the correct sign when she hosts the TV show People Are Talking, 1978. (Photo: Afro American Newspapers / Gado / Getty Images)

THE TONIGHT SHOW WITH JOHNNY CARSON – Pictured: talk show host, Oprah Winfrey, during an interview with host Joan Rivers, January 27, 1986 – (Photo by: Paul Drinkwater / NBC / NBCU Photo Bank via Getty Images)

BEVERLY HILLS, CA – MARCH 13: Oprah Winfrey attends the candidates' luncheon at the 58th Academy Awards on March 13, 1986 at the Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)

SATURDAY NIGHT LIVE – Episode 14 – Pictured: Oprah Winfrey at the April 14, 1986 monologue (Photo by Alan Singer / NBC / NBCU Photo Bank via Getty Images)

(Original caption) 9/8/1986-New York, NY: Oprah Winfrey (pictured 8/21), whose show hit the doors of Phil Donahue in Chicago and Tom Snyder in New York, will debut nationally this month. Her interviews are energetic, probing, revealing, earthy and, above all, she is funny. UPI eh / Ezio Peteresen

BEVERLY HILLS, CA – NOVEMBER 7: Oprah Winfrey seen on November 7, 1986 at Tramp's in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)

NEW YORK CITY – OCTOBER 22: Quincy Jones and Oprah Winfrey attend the benefit gala of the NAACP Legal Defense Fund on October 22, 1987 at the Waldorf Hotel in New York. (Photo by Ron Galella, Ltd./WireImage)

BEVERLY HILLS, CA – DECEMBER 13: Oprah Winfrey and Steadman Graham attend the 47th Annual Golden Apple Awards on December 13, 1987 at the Beverly Wilshire Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)

Stedman Graham and Oprah Winfrey (Jim Smeal / WireImage photo)

Oprah Winfrey at the Hilton New York hotel in New York (photo by Ron Galella, Ltd./WireImage)

END OF NIGHT WITH DAVID LETTERMAN – Episode 1135 – Pictured: (from left to right) Talk show host, Oprah Winfrey, during an interview with host David Letterman, May 2, 1989 – (Photo: Paul Natkin / NBC / NBCU Photo Bank via Getty Images)

Stedman Graham and Oprah Winfrey at the 15th Annual Breast Rape Center Brunch, September 24, 1989, at Sandra Moss, Holmby Hills, California, USA. (Photo by Jim Smeal / WireImage)

NEW YORK CITY – JUNE 27: Oprah Winfrey attends the 18th Annual Daytime Emmy Awards on June 27, 1991 at the Marriott Marquis Hotel in New York. (Photo by Ron Galella, Ltd./WireImage)

NEW YORK – SEPTEMBER 14: Singer Aretha Franklin and her talk show host Oprah Winfrey behind the scenes at Radio City Music Hall on September 14, 1991. (Photo by Waring Abbott / Getty Images)

TV personality Oprah Winfrey. (Photo by Time Life Pictures / DMI / The LIFE / Getty Images Collection)

398059 20: Talk show host Oprah Winfrey visits the annual Kennedy Center Gala on December 2, 2001, at the Kennedy Center in Washington, DC. (Photo by Alex Wong / Getty Images)

398107 04: ITALY OUT Oprah Winfrey, host of a TV show, leaves the Midtown Hotel for Chicago after buying clothes and works of art on December 3, 2001 in New York.

NEW YORK CITY, NY – NOVEMBER 13: Oprah Winfrey and Elie Wiesel attend the New York Public Library Libraries Lions Annual Gala at the New York Public Library on November 13, 2006 in New York City. (Photo by Matt Carasella / Patrick McMullan via Getty Images)

Halle Berry, Angela Bassett and Oprah Winfrey at the Lionsgate Pre-Oscar Party for the "Monster's Ball" at Mirabelle Restaurant in West Hollywood, California, USA. (Photo by J. Vespa / WireImage)

Oprah Winfrey at the 54th edition of the Primetime Emmy Awards – Press Room at the Sanctuary Auditorium in Los Angeles, California, United States. (Photo by Gregg DeGuire / WireImage)

Oprah Winfrey at the Marriot Marquis in New York (Photo by Jim Spellman / WireImage)

NEW YORK CITY – NOVEMBER 12: Oprah Winfrey and Gayle King attend the 46th Annual National Urban League Awards Ceremony on November 12, 2002 at Pier 60 in Chelsea Piers, New York. (Photo by Ron Galella, Ltd./WireImage)

Oprah Winfrey winner for the favorite talk show host (photo from SGranitz / WireImage)

Walter Massey, president of Morehouse, and Oprah Winfrey (photo by Moses Robinson / WireImage)

HOLLYWOOD, CA – FEBRUARY 29: Television personality Oprah Winfrey attends the 76th Academy Awards at Kodak Theater on February 29, 2004 in Hollywood, California. (Photo by Carlo Allegri / Getty Images)

NEW YORK – SEPTEMBER 30: TV Personality Oprah Winfrey makes an appearance at the Waldorf Astoria where she was awarded the United Nations Association with her Global Humanitarian Action Award. September 30, 2004 in New York. (Photo by Peter Kramer / Getty Images)

BEVERLY HILLS, CA – OCTOBER 23: Oprah Winfrey speaks at the 16th Carousel of Hope presented by Mercedes-Benz for the Barbara Davis Center for Childhood Diabetes at the Beverly Hilton Hotel on October 23, 2004 in Beverly Hills. in California. (Photo by Frank Micelotta / Getty Images)

Beyonce, Halle Berry and Oprah Winfrey at the Beverly Hilton Hotel in Beverly Hills, California (photo by Steve Granitz / WireImage)

Oprah Winfrey at the 36th NAACP Image Awards – Show at Dorothy Chandler Pavillion in Los Angeles, California, USA. (Photo by Jesse Grant / WireImage)

Oprah Winfrey (photo by Gregory Pace / FilmMagic)

Oprah Winfrey at the 28th Annual Kennedy Center Honors Ceremony – Arrivals at the Kennedy Center for Perfoming Arts in Washington, DC, United States. (Photo by Jeff Snyder / FilmMagic)

AUGUST – FEBRUARY 6: Oprah Winfrey, television personality, looks at Correta Scott King's body at the historic Ebenezer Baptist Church during a public screening on February 6, 2006 in Atlanta, Georgia. King's coffin will rest in the Ebenezer Baptist Church, where her husband, Reverend Martin Luther King Jr. preached in the 1960s and where the matriarch of civil rights remained a member until his death. King died on January 31 in Mexico City in a fresh medicine clinic, where doctors claimed she was battling advanced cancer of the ovary. (Photo by Jason Reed-Pool / Getty Images)

HOUSTON – FEBRUARY 18: Singer Mary J. Blige and television personality Oprah Winfrey are seen on the court before the NBA All-Star's Saturday night festivities at the Houston All-Star Weekend at Houston's Toyota Center , in Texas. NOTE TO THE USER: The user acknowledges and expressly agrees that, by downloading and / or using this photo, the user consents to the terms and conditions of the Getty Images License Agreement. (Photo by Getty Images)

NEW YORK – APRIL 19: Oprah Winfrey, a television personality, attends the opening night of the "Three Days of Rain" at the Bernard B. Jacobs Theater on April 19, 2006 in New York. (Photo by Paul Hawthorne / Getty Images)

JOHANNESBURG, SOUTH AFRICA – AUGUST 10: Oprah Winfrey kisses one of the girls she interviewed for her unprivileged girls school on August 10, 2006 in Johannesburg, South Africa. Oprah has invested more than $ 40 million to build a first class high school for a few hundred lucky girls from all over South Africa. She fulfilled her dream and promised President Nelson Mandela to build the school and improve the lives of these girls. (Photo by Per-Anders Pettersson / Getty Images)

LUIS GUERRA / PHOTO RAMEY 2006 New York, September 24, 2006 OPRAH WINFREY leaving his hotel in downtown Manhattan. PGlg (Photo by LUIS GUERRA / 2006-2006 Phil Ramey / RameyPix / Corbis via Getty Images)

(EXCLUSIVITY, premium rates apply) Oprah Winfrey (Photo by Kevin Mazur / WireImage)

Mary J. Blige and Oprah Winfrey at the 2007 Vanity Fair Oscar party hosted by Graydon Carter – Arrivals at Mortons in West Hollywood, California, USA. (Photo by George Pimentel / WireImage)

HOLLYWOOD – December 11: Oprah Winfrey and Jennifer Hudson at the premiere of "The Great Debaters" at the Arclight Theater on December 11, 2007 in Hollywood, California. (Photo by Jeff Kravitz / FilmMagic)

Actor-singers BeBe Winans, Chaka Khan, producer Oprah Winfrey and singer-actress LaKisha Jones pose during the celebration for new members of Broadway troupe Chaka Khan, BeBe Winans and LaKisha Jones on Broadway Theater on January 9, 2008 in New York. York City. (Photo by Bruce Glikas / FilmMagic)

LOS ANGELES, CA – FEBRUARY 3: Michelle Obama, wife of US Democratic Senator Barack Obama (D-IL) (left) is joined by California's first lady Maria Shriver (right) and television host Oprah Winfrey (right), at a campaign rally for Obama at the Pauley Pavilion at the University of California at Los Angeles (UCLA) on February 3, 2007 in Los Angeles, California. Presidential candidates and their supporters vie for votes in the last two days leading up to the primaries next Tuesday, February 5th. (Photo by David McNew / Getty Images)

Glenn Close and Oprah Winfrey arrive at the Beverly Hills Hotel on December 5th, 2008, in Beverly Hills, California, at the annual Women In Entertainment luncheon. (Photo by Steve Granitz / WireImage)

HOLLYWOOD – MARCH 07: Oprah Winfrey performs on stage at the 82nd Academy Awards at Kodak Theater on March 7, 2010 in Hollywood, California. (Photo by Kevin Winter / Getty Images)

CHICAGO, IL-11 NOVEMBER: Pictures of a Sunday arts profile on Oprah Winfrey, recipient of the 2010 Kennedy Center Award in Chicago, Illinois on November 11, 2010 (Photo by Marvin Joseph / The Washington Post via Getty Images

Washington, DC – December 4: Oprah Winfrey, one of the recipients of the 2010 Kennedy Center, poses for the official class photo with her honored colleagues following the official dinner of artists at the US State Department in Washington , DC December 4, 2010. (Photo by Ron Sachs-Pool / Getty Images).

SYDNEY, AUSTRALIA – DECEMBER 14: Oprah Winfrey's address to members of the public at the second recording of "Oprah Winfrey Show" at the Sydney Opera House on December 14, 2010 in Sydney, Australia. 12,000 viewers were selected from 350,000 applicants to participate in two recordings of the movie "The Oprah Winfrey Show" at the Sydney Opera House. Oprah came to Australia last week with 302 super fans from the US, Canada and Jamaica to produce four shows for the program's 25th and final season. the programs will be broadcast in the United States and Australia in January 2011. (Photo by Don Arnold / WireImage)

(EXCLUSIVE COVER) Annabella Sciorra and Oprah Winfrey pose behind the scenes of the hit play The Motherf ** ker with The Hat on Broadway at Schoenfeld Theater on April 30, 2011 in New York. *** Exclusive *** (Photo by Bruce Glikas / FilmMagic)

CHICAGO, IL – MAY 17: Aretha Franklin and Oprah Winfrey attend Surprise Oprah! A farewell show at the United Center on May 17, 2011 in Chicago, Illinois. (Photo by Timothy Hiatt / FilmMagic)

NEW YORK, NY – OCTOBER 24: Ricky Lauren, Ralph Lauren and Oprah Winfrey attend an evening with Ralph Lauren hosted by Oprah Winfrey and presented at the Lincoln Center on October 24, 2011 in New York. (Photo by Larry Busacca / Getty Images for Ralph Lauren)

JOHANNESBURG, SOUTH AFRICA – DECEMBER 1: Oprah Winfrey at the graduation ceremony on December 1, 2012 in Johannesburg, South Africa. Oprah came to South Africa for this year's graduation ceremony at the Oprah Winfrey Leadership Academy. (Photo by Gallo Images / Sunday Times / Kevin Sutherland)

AUSTIN, TX – JANUARY 14: In this support photo provided by the Oprah Winfrey Network, Oprah Winfrey (R) speaks to Lance Armstrong during an interview regarding the controversy surrounding his cycling career on January 14, 2013 in Austin, in Texas. Oprah Winfrey's exclusive and confidential interview with Lance Armstrong, titled "Oprah and Lance Armstrong: World Exclusivity," was expanded to a two-night event on OWN: Oprah Winfrey Network. The special episode of 'Oprahâs Next Chapter & # 39; will air on Thursday, January 17 from 9 am to 10:30 pm ET / PT (as previously announced) and Friday, January 18th at 9 pm. ET / PT. The interview will be simultaneously broadcast live worldwide both nights on Oprah.com. (Photo by George Burns / Oprah Winfrey Network via Getty Images)

LOS ANGELES, CA – JANUARY 18: Actors Forest Whitaker and Oprah Winfrey arrive at the 20th Screen Actors Guild Awards at the Shrine Auditorium on January 18, 2014 in Los Angeles, California (Photo by Jeffrey Mayer / WireImage)

LOS ANGELES, CA – AUGUST 12: (LR) Actors James Marsden, Oprah Winfrey and Minka Kelly attend the after party premiere of LEE DANIELS & THE BUTLER Los Angeles, presented by TWC, Budweiser & FIJI Water, Purity Vodka and Stack Wines at the Ritz-Carlton on August 12, 2013 in Los Angeles, California. (Photo by Mike Windle / Getty Images for TWC)

BEVERLY HILLS, CA – AUGUST 12: Oprah Winfrey at the press conference 'Lee Daniels & # 39; The Butler's at the Four Seasons Hotel on August 12, 2013 in Beverly Hills, California. (Photo by Vera Anderson / WireImage)

LOS ANGELES, CA – AUGUST 12: Oprah Winfrey attends the premiere of LEE DANIELS & THE BUTLER Los Angeles, presented by TWC, Budweiser and FIJI Water, Purity Vodka and Stack Wines, at Regal Cinemas LA Live in Los Angeles, California. (Photo by Mike Windle / Getty Images for TWC)

Santa Monica, Calif. – Jan. 16: Oprah Winfrey, actress personality and television actress, attends the 19th Critics' Choice Movie Awards at Barker Hangar on January 16, 2014 in Santa Monica, California. California. (Photo by Steve Granitz / WireImage)

Santa Barbara, Calif. – February 5: Oprah Winfrey performs on stage at the Santa Barbara International Film Festival at the Arlington Theater on February 5, 2014 in Santa Barbara, California. (Photo by Michael Kovac / WireImage)

Santa Barbara, Calif. – February 5: Oprah Winfrey visits Moet & Chandon after receiving the Montecito Award at the Santa Barbara International Film Festival at the Arlington Theater on February 5, 2014 in Santa Barbara, California. (Photo by Michael Kovac / WireImage)

NEW YORK, NY – AUGUST 04: Producers Oprah Winfrey and Steven Spielberg attend the New York Premiere "The One Hundred Foot Trip" at the Ziegfeld Theater on August 4, 2014 in New York City. (Photo by Jim Spellman / WireImage)

GOOD MORNING AMERICA – Oprah Winfrey visits Social Square on GOOD MORNING AMERICA, broadcast on 8/5/14 on the ABC television channel. (Photo by Ida Mae AStute / ABC via Getty Images) OPRAH WINFREY

TELLURIDE, CO – AUGUST 29: Oprah Winfrey arrives at the Wild Screening at the 2014 Telluride Film Festival – Day 1 on August 29, 2014 in Telluride, Colorado. (Photo of Vivien Killilea / Getty Images for the Telluride Film Festival)

AUBURN HILLS, MI – SEPTEMBER 12: Oprah Winfrey speaks at the Auburn Hills Palace for her Life You Want tour on September 12, 2014 in Auburn Hills, Michigan. (Photo by Scott Legato / Getty Images)

SELMA, AL – JANUARY 18: EDITORIAL USE ONLY – Oprah Winfrey and John Legend stand in front of the crowd during a live special performance on the Edmund Pettus Bridge on January 18, 2015 in Selma, Alabama. (Photo of Paras Griffin / Getty Images for Paramount Pictures)

BEVERLY HILLS, CA – FEBRUARY 2: Producer / actress Oprah Winfrey attends the 87th Oscar-nominated lunch at the Beverly Hilton Hotel on February 2, 2015 in Beverly Hills, California. (Photo by Steve Granitz / WireImage)

NEW YORK, NY – OCTOBER 14: Oprah Winfrey attends the premiere of Belief & # 39; in New York at TheTimesCenter on October 14, 2015 in New York. (Photo by Jamie McCarthy / Getty Images)

NEW YORK – OCTOBER 14: Oprah Winfrey visits CBS this morning with co-hosts Norah O'Donnell and Gayle King on Wednesday, October 14, 2015. (Photo by Heather Wines / CBS via Getty Images)

NEW YORK, NY – JUNE 12: Oprah Winfrey, Cynthia Erivo and Scott Sanders in the press room of the 70th Annual Tony Awards at the Beacon Theater on June 12, 2016 in New York. (Photo of Walter McBride / WireImage)

GOOD MORNING AMERICA – Oprah Winfrey talks about her new drama series, the unscrupulous world of the Greenleaf family and their massive mega-church Memphis, in GOOD MORNING AMERICA, on Thursday, June 16 (7 am-9am), aired on the network ABC television. (Photo: Ida Mae Astute / ABC via Getty Images) LARA SPENCER, OPRAH WINFREY

GOOD MORNING AMERICA – Oprah Winfrey talks about her new drama series, the unscrupulous world of the Greenleaf family and their massive mega-church Memphis, in GOOD MORNING AMERICA, on Thursday, June 16 (7 am-9am), aired on the network ABC television. (Photo by Ida Mae Astute / ABC via Getty Images) OPRAH WINFREY

WASHINGTON, DC – JUNE 14: Michelle Obama (left) and Oprah Winfrey (right), First Lady of the United States, participate in a conversation on "Leading the Way for the Next Generation of Women" at the Summit. White House on the Status of Women, June 14, 2016 in Washington, DC. The White House is host to the very first summit for gender equality. (Photo by Alex Wong / Getty Images)

WEST HOLLYWOOD, CALIFORNIA – JUNE 15: Actress Oprah Winfrey attends the premiere of the movie 'Greenleaf & # 39; from OWN to the Lot on June 15, 2016 in West Hollywood, California. (Photo by David Livingston / Getty Images)

BURBANK, CA – AUGUST 29: Executive Producer Oprah Winfrey (left) and executive / creative producer Ava DuVernay attend OWN: Opera Winfrey Network presented August 29 at Warner Bros. Studio by Lot Steven J. Ross Theater. 2016 in Burbank, California. (Photo by Mark Davis / WireImage)

NEW YORK, NY – APRIL 18: Oprah Winfrey attends the premiere of "The Immortal Life of Henrietta Lacks" at the SVA Theater on April 18, 2017 in New York. (Photo by Dimitrios Kambouris / Getty Images)

D23 EXPO 2017 – Saturday, July 15, 2017 – The ultimate Disney fan event – brings all of Disney's worlds together under one roof for three days of presentations, pavilions, experiences, concerts, previews, shopping and more . The event, to be held July 14-16 at the Anaheim Convention Center, will provide fans with unprecedented access to Disney movies, television, games, theme parks and celebrities. Group of images LA via Getty Images
OPRAH WINFREY, MINDY KALING, REESE WITHERSPOON, CHRIS PINE

MONTECITO, CA – OCTOBER 15: Writer Oprah Winfrey and singer Margaret Bell perform at Oprah Winfrey's gospel brunch celebrating her new book "Wisdom of Sundays" on October 15, 2017 in Montecito, California. (Photo by Alberto E. Rodriguez / Getty Images)

ATLANTA, GA – NOVEMBER 03: Oprah Winfrey speaks at the Ron Clark Academy's 10th anniversary celebration at the Ron Clark Academy on November 3rd, 2017 in Atlanta, Georgia. (Photo of Prince Williams / WireImage)

WEST HOLLYWOOD, CA – NOVEMBER 7: Oprah Winfrey attends a recording of "Queen Sugar After-Show" at OWN on November 7, 2017 in West Hollywood, California. (Photo by Jason LaVeris / FilmMagic)