On almost any day, the majority of people I interact with are anywhere from decent to pleasant. What puzzles me is that the one rude or mean person out of a whole day of great people, is the one that I end up thinking about the most.

I don't understand why the one person who hurts my feelings*, is the one who I pay all the attention to in my thoughts. Does anyone relate to this or have a theory about what's going on?

*regardless of who it is