I just read about John Le Carre, the great spy novelist. He had an absolutely miserable childhood. His mother deserted him when he was young. His father was a playboy and a drunk. He was shifted around to many different homes. He knew he was a writer when he was about nine, but he was dyslexic. So here was a person with an absolutely messed-up childhood and a symptom that prevented him from doing what he wanted to do most. Yet that very symptom was part of the calling. It forced him to go deeper.