I would say plotting is the most difficult thing for me. Characterization is only hard because sometimes I feel I get so interested in it that I want to talk too much about the characters and that slows the story down. So I say, "Hey, people want to find out what's going to happen next, they don't want to listen to you spout off about this or that person." But I think even the bad guy deserves to tell his side of the story.
Stephen KingLying in the bed that had once held two, Lisey thought alone never felt more lonely than when you woke up and discovered you still had the house to yourself. That you and the mice in the walls were the only ones still breathing.
Stephen KingThere were times . . . when it occurred to me that I was repeating my mother's life. Usually this thought struck me as funny. But if I happened to be tired, or if there were extra bills to pay and no money to pay them with, it seemed awful. I'd think 'This isn't the way our lives are supposed to be going.' Then I'd think 'Half the world has the same idea.
Stephen King