Fans of "The Sound of Music" will remember the scene in which Liesl, the eldest Von Trapp daughter, radiantly sings "I am 16, going on 17." But in real life, actress Charmian Carr, who played the teenager in the 1965 movie, hasn't felt radiant for the past two decades. Now a grandmother, Carr has long suffered from severe clinical depression. Medications not only failed to help but also produced debilitating side effects.Read more