I think what's most disturbing about success is that it's very hazardous to your health, as well as to your daily routine. Not only are there intrusions on your time, but there is a kind of corrosion of your own humility and sense of necessary workmanship. You get the idea that anything you do is in some way marvelous.
The writer is both a sadist and a masochist. We create people we love, and then we torture them. The more we love them, and the more cleverly we torture them along the lines of their greatest vulnerability and fear, the better the story. Sometimes we try to protect them from getting booboos that are too big. Don’t. This is your protagonist, not your kid.
A character, to be acceptable as more than a chess piece, has to be ignorant of the future, unsure about the past, and not at all sure of what he's supposed to be doing.