Oprah Winfrey has revealed her worst career moment was the box-office failure of her movie Beloved.
Oprah starred as a former slave in the 1998 film based on a Pulitzer Prize-winning novel, which opened the same weekend as the slasher film, Bride Of Chucky, and Beloved flopped at the box office.
Oprah told Piers Morgan in an interview for his new CNN talk show that it was the only time she was ever depressed, sending her into a "massive, depressive macaroni-and-cheese-eating tailspin".
She said: "I don't want to call it a turkey but it didn't work.
"I asked my chef at the time make some macaroni-and-cheese... I ate about 30lbs worth. I'm not kidding.
"I would have to say it's the only time in my life I was ever depressed and I recognised 'I am depressed', because I've done enough shows [about people with depression].
"And I recognised if I didn't come out of this I'm going to have to get some help. And then I thought 'well, who am I going to go to?' and I literally prayed my way through it and gave myself a time limit."
Oprah revealed that failure had taught her how to avoid it happening again.
She said: "I think you can experience it infrequently if you get the lesson."
The interview airs on Piers Morgan Tonight on January 17 in the US and on January 18 in the UK.