I have another annoying habit. I tend to get rather ... enthusiastic in discussions thanks to applying The mind projection fallacy to my discussion partner.

Sometimes if find a certain fact X so glaringly obvious that I tend to assume that other people also find it obvious. So, when the discussion starts I think that we are both on the same page when we are not. This leads to me misunderstanding their arguments. From my point of view I seems like they are doing it on purpose which makes me rather flustered. I usually takes me a while in such cases to realize that they not know about X.