I'm certain most writers have favorite phrases and word combinations that they use without thinking. I had one of mine slap me in the face last night when I was editing a story that I had written for a market to which I've never submitted.
In a five-sentence block of text I used the phrase "and then" three times. Then I searched the entire 5,100-word story and found it several more times. I revised every occurrence but two and now find myself wondering if I overuse "and then" in everything I write, or just this one story?