With her own hit television show and starring roles in popular movies, gold records and an international concert tour, Demi Lovato appeared to have it all. But during her tour last fall, the 18-year-old star slowly began to unravel and, after a family intervention, checked into treatment. Now, Demi sits down for her first television interview since spending three months in treatment. She speaks candidly to ABC News Anchor, Robin Roberts about her struggles with cutting and food addictions, and, for the first time, she talks about the depression that has plagued her since childhood — and how she’s learning to find her smile again. A portion of Robin Robert’s exclusive interview will air on “Good Morning America” (7:00 – 9:00 a.m. ET) and the interview will air on “20/20” on FRIDAY, APRIL 22 (10:00 – 11:00 p.m. ET) on the ABC Television Network.