The 20-year-old singer revealed that she has battled depression since she was just 7 years old—when she first felt the spotlight on Barney & Friends.
"The principal called my parents and made me sign this suicide contract saying that I would not kill myself," she told the mag. "They weren't expecting that so young."
"My parents were like, 'You have two choices. We can either shut it down and not talk about it, or you can tell people what's up,'" she recalled. "There was no hesitation, really. I opened up that gate."
The "Heart Attack" singer has embraced her past and explained that being sober and on her own after seeking treatment is "not as scary as I thought it would be."