Demi Lovato

Demi was 18 years old when she went to rehab in 2011.

It was then Demi was diagnosed with bipolar disorder.

Since that moment, Demi has been having therapy to help her mental state and stay sober.

She said: "Having people who are professionals as well and not relying on just one person is another key to maintaining a healthy recovery. I talk to my therapist.”