Nearly five years after her first hospitalization for mental health issues, Demi Lovato continues to be vocal about her struggles. The superstar was diagnosed with bipolar disorder in 2011 and has become a spokesperson for mental health awareness. In a recent interview with People magazine, Lovato said, "If you know someone or if you're dealing with it yourself, just know that it is possible to live well. I'm living proof of that." In March, the Disney alum will celebrate five years of sobriety.