Demi Lovato used to want to "party like an adult".

The 21-year-old star was admitted to rehab in 2010 to overcome issues with bulimia and self-harming.

Even when her mother and stepfather tried to guide her in the right direction Demi admits she would rebel against them to feel more grown-up. She also puts this down to having so many responsibilities from a young age.

"My parents tried to control me, but I'd be like, 'Oh really, I'm grounded? Well, I pay the bills.' They did the best they could. And I think that's why a lot of young stars struggle when they're making money or providing for their family," she told the latest issue of Nylon magazine.

"My mentality was, 'Work hard, play hard.' It was hard to listen to the word 'no'. I wanted to make my own rules. I thought that if I was adult enough to get there, then I could party like an adult. And obviously, I couldn't."

Demi launched the Lovato Treatment Scholarship Program after her estranged father Patrick passed away from cancer earlier this year. The scheme aims to help people overcome their mental health and addiction issues by paying for their treatment.

Although she has been open about her struggles in the past the popstar doesn't want to be constantly associated with the topic.

"I would like to separate myself from being the girl who overcame her issues, or the Disney chick who ended up in rehab while she was still on Disney," she added.

"I don't want people to hear my songs on the radio and be like, 'Oh, that's the girl who cut.' Now I have probably the best relationship between any artist and their fans, because I have no secrets."

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