What happens next?

How to stop holding grudges
Practice empathy.
See the situation from the offender's perspective. Why would they behave that way? Maybe they had a really tough day at work.

Choose from:
1). Can you find out the strengths and weaknesses of someone else's situation? Start by looking at their perspective first. Are you so focused on the situation as to not hear the bad parts of it? Try to empathize with the other person and relate to them..
2). Or maybe they got fired from that final project that they had been unhappy about. Their lack of empathy can manifest when something you say made them unhappy (or made them upset in the first place)..
3). Maybe you would have reacted in a similar way if you were in their shoes. You can practice empathy by actively listening to others, opening up to others, withholding judgment, and volunteering..
4). Maybe your neighbor just went through a rough patch. These types of thoughts often seem irrational to a point that making someone feel worse will only prolong the fight..
3).