Demi Lovato: 'I didn't think I'd make it to my 21st birthday'

Songstress Demi Lovato has revealed that she worried her "fast" lifestyle would put her into an early grave.

During a new interview with American Way magazine, the 'Cool For The Summer' beauty explained that prior to getting sober and undergoing treatment, she thought she would die before her 21st birthday: “I lived fast and I was going to die young. I didn’t think I would make it to 21.”

“I didn’t go into treatment thinking, ‘OK, now I’m going to be an inspiration.' At times I was resentful for having that kind of responsibility, but now, it’s really become a part of my life. It holds me accountable.”

She added: “When I have meet-and-greets, I can’t tell you the amount of times that girls will show me their arms covered in scars or cuts. They’ll tell me, ‘You helped me get through this. Because of you, I stopped self-harming,’ or ‘I got sober.’ Hearing those things gave my life new meaning.”

Watch Lovato's Carpool Karaoke segment below: