Demi Lovato is much more emotional since getting sober.

The 'Cool for the Summer' hitmaker thinks she was numb before seeking treatment in rehab for an eating disorder, self-harming, alcohol and drug abuse in 2010.

She explained: ''When you are sober, you experience everything on a heightened level. If you are going through something stressful, you're extra stressed. I used to sit through a scary movie and not be scared once. At haunted houses, things would jump out at me, and I would sit there bored.

''Then I got sober and I feel everything. I cry more. I f***ing laugh harder. Everything. You have to think, if you are chasing the next party your whole life and you always have to be numb, is that something to be proud of?''

Meanwhile, the 22-year-old admitted she feels much more confident about her place in the music industry these days.

She told the September issue of Cosmopolitan magazine: ''The industry needs an artist who wears rhinestones and high heels and can walk wherever in head-to-toe glam 24/7. The industry also needs those who aren't going to conform. I'm the second person. I don't conform. I f***ing wear sweats. I don't put on heels to go to Whole Foods.''