I'll agonize over sentences. Mostly because you're trying to create specific effects with sentences, and because there are a number of different voices in the book.
It's the most humbling sport ever. It's like a lousy lover. It's like some guy who's never there when you need him. Every once in a while, he comes and makes you feel like heaven on earth. . And then the moment you say, 'I really need this,' he's gone.