The former model and CHEERS star has recently signed up to become a spokeswoman for American diet firm JENNY CRAIG in a bid to lose 50 pounds (22.7 kilograms) by this summer (05).
But she insists Oprah and her Scientology pals gave her the courage to face her weight problems head on.
She says, "Oprah said she knew she needed to stop (eating) when she started having heart palpitations. (After hearing that) I held up in Chicago, I stopped smoking, I decided I'm doing something, I'm going to do something about this weight and I'm going to change it.
"I had a period in the last two years... when I stayed in bed for three days. I was freaked out of my mind. I thought, 'You're fat, you're old, you're ugly, you're a loser, you're just done.'
"I'm a Scientologist, so I went over to my Scientology centre and did a little programme."
Wilson, who underwent a gastric bypass to shed her bulk, will monitor Alley's progress on American news show ENTERTAINMENT TONIGHT.13/01/2005 21:29