It isn't a hunch but the subconscious mind, which is the creative mind, at work. That is the mind which makes artists do things without their knowing how they came to do them. Perhaps with me it was the cumulative effect of a lot of little things individually insignificant but collectively powerful.
As a writer you know you don't have to deal with a lot of the crap that most people deal with, the political things. Every couple of years when your book comes out then you have to go into these fights with the publisher and the publicist and that's it.