When I was 19, I had a terrible eating disorder [anorexia nervosa] and was hospitalized. I felt like the biggest failure on the planet. I dropped out of college. But Billy Graham’s wife, Ruth [who had looked out for Cornwell and her siblings after their mother was hospitalized with depression when the future author was 9], said, “I want you to tell your story.” She gave me a journal that I still have. And so, at age 19, I started writing my autobiography.