Demi Lovato is back on track, after dropping off the map briefly in late 2010.

First there was her hard-to-miss appearance in that dress at the Latin Grammy Awards, and now she’s on the cover of February’s Seventeen.

Demi on the problems she faced a year ago and just how bad it got:

“I’m not gonna lie. I was self-medicating. I was doing things like drinking and using [drugs], like a lot of teens do to numb their pain.”

Demi on how she’s doing today:

“I don’t drink, I don’t do drugs, I don’t throw up after my meals, I don’t starve myself. There’s nothing that I do that I feel ashamed of.”

Demi on who was there for her during the tough times:

“There were two people [who were there for me]. No matter how many times we fight, we will always be in each others’ lives. [Miley Cyrus and I] are very strong-headed, so when we fight, it’s brutal and we’re like, ‘We’re never going to be friends again!’ Then two days later, we’re like, ‘I love you and I miss you!’ Selena [Gomez] and I, we never fight. She’s not a confrontational person at all. Both of them will never leave my life no matter what happens, because we’ve been through so much together.”

The February issue of Seventeen hits newsstands Tuesday, January 10th.