This is going to be a short post, but I think it'll be very helpful.
When I was at the LDStorymaker's Conference, someone told me about Wordle. You can copy and paste an entire novel at wordle.net. It then makes a cloud of your most-used words. Obviously, your character's names will probably be the biggest, but then looking at the rest of the cloud, you can find your tick words. I had "back" as the biggest word after the names of my main characters, and also "like" was surprisingly big.
This is a really helpful tool in finding those repeating words that we automatically gravitate to.