Demi Lovato, 25, just went through what we’re sure is one of the scariest moments of her life when she allegedly overdosed on an unknown substance and after the shocking close call, she’s working hard to make sure she doesn’t put herself down and instead, focus on getting better. “Demi is trying her best to not be too hard on herself right now, she knows that addiction is a disease, and that it is something she is going to have to battle for the rest of her life,” a source close to Demi EXCLUSIVELY told HollywoodLife. “Demi is so grateful to have so many loving people around her that care so much about her. She knows how lucky she is, she’s determined to get her life back on track, and be so