"I'm not claiming to be sober," the singer tells Glamour in its December issue. "I think that that would be misleading. I drink alcohol. My father has a vineyard, and [the wine is] really delicious, by the way."
"Anyway, for most addicts, they would advise never to have any sort of substance," she says. "I just have my own journey, and I am very blessed to this day to be alive."
As part of that journey, Fergie shares her advice for young women on how to stay positive and make their dreams come true.
"There were periods of my life when a lot of people didn't believe in me," she tells Katie Couric, who interviewed her. "I still had faith in myself. I really had to ask myself life questions. Where do I see myself in five years? Create a ladder for yourself, and walk up the steps. Climb that ladder."
As for her relationship with hubby Josh Duhamel, the musician says weathering an infidelity scandal together solidified their bond.
"Our relationship was stronger than that," she says. "We live in a voyeuristic world, and it's part of our business. But I like to [focus on] all the perks that I get in this business."