Writing fiction, especially a long work of fiction, can be a difficult, lonely job; it's like crossing the Atlantic Ocean in a bathtub. There's plenty of opportunity for self-doubt.
Stephen KingBy the time I was fourteen the nail in my wall would no longer support the weight of the rejection slips impaled upon it. I replaced the nail with a spike and went on writing.
Stephen KingHow does it happen that a writer who's not even very good - and I can say that, I've read four or five of his books - gets to be in charge of the world's destiny? Or of the entire universe's?" If he's not very good, why didn't you stop at one?" Mrs. Tassenbaum smiled. "Touché. He is readable, I'll give him that - tells a good story.
Stephen King