Demi Lovato talks about challenge of being sober

Demi Lovato has admitted she was doing drugs while simultaneously promoting her sobriety several years ago. But she still continued to take drugs, as she recalled: 'I would sneak out and get drugs, I would fake my drug tests with other people's pee' Eventually, what triggered Demi to stop the substance abuse was the thought of losing the people she cares about. She's come a long way: On Wednesday Demi shared a shocking image of how she looked before her recovery from bulimia nervosa alongside a more healthy image from this year 'When I was in a relationship with Wilmer I went three years without purging and when we broke up that’s one of the first things I did' Demi recalled of her split with actor Valderrama 'It’s embarrassing to look back on the person that I was,' Demi said, adding, 'I think that approach worked for me because … it was the beginning of the process of surrendering.' 'When I was in a relationship with Wilmer I went three years without purging and when we broke up that’s one of the first things I did,' she said to her manager, Phil McIntyre. 'I'm not the poster child for recovery': Demi has admitted it's an ongoing struggle to stay sober 'The less I have to think about food, the easier it is to go about having a normal life and I don’t want to let anybody down so when I do have moments when I slip up, I feel very ashamed.