If I see a phrase that strikes me as ugly, I'll delete it. Or, if I find a way to say something a bit more freshly than it was expressed originally, I'll do it. Ultimately, you want to try to leave behind the best possible paragraph or sentence.
Sure, best seller. I'd love to knock Stephen King off the top of the list. I know I won't, but, after all, I spend my life inventing a different reality.