Elizabeth Vargas has been known throughout her 30-year career for her strong reporting around the world, her tough interviews and her steadiness during breaking news coverage. But now for the first time, Vargas reveals that she has also long struggled with alcoholism and anxiety. In her interview with Dan Harris and in her new book, "Between Breaths: A Memoir of Panic and Addiction," Vargas shares that she suffered repeated relapses and says meditation and reaching out to others has helped save her.