Question: What's your worst writing habit?
My Answer: Words that undercut my own intention. Like sort of, kind of, and seemed to. John felt sort of sick in the afternoon = John felt sick in the afternoon. They are my plague. Kill, kill, kill! Runner-up: I use passive more than I should, and more than I think I do. Often, I'll use it on purpose, for a particular effect... but then I totally overuse the effect, and then the effect becomes an unconscious habit and slips in elsewhere, and then... Grrrrrr.
So what's your answer? Worst writing habit? (and it can be about any aspect of writing, near or far)