Gregory Benford said this quote

“ Redwing had read somewhere that one of his favourite writers, Ernest Hemingway, had been asked what was the best training for a novelist. He had said “an unhappy childhood.” Redwing had enjoyed a fine time growing up, but he wondered if this whole expedition was unfolding more like a novel, and would be blamed on one person, one character, the guy in charge: him. Maybe you got a happy childhood and then an unhappy adulthood, and that’s how novels worked. ”