"I think I did seven takes on just my name because it was 'too emotional'. I go, 'Is there too much emotion in the 'Oprah' part or the 'Winfrey' part?," Winfrey said.
"They would say, 'All right, you need to flatten out your voice, there's too much emotion in your voice.'"
Winfrey, of course, is well known for her exuberant delivery, which is one of her trademarks.
"So I was working on pulling myself down and flattening out my personality — which, for me, is actually not such a good thing."
Winfrey also revealed she was helping BFF Gayle King, who is about to enter contract negotiations with CBS in the US.
"I said, 'Get what you want. Get exactly what you want because now's the time. And if you don't get what you want, then make the next right move,'" she said.