When I was a young boy my mother used to say to me when I was angry (which wasn’t very often) to count to ten before saying or doing anything. There mere fact of pausing before you act or say something out of spite is quite a useful tool. Sometimes we just want to respond or act immediately to what’s been said or done to us without thinking first. Our first instinct is to fight back or lash out. Unless you are in physical danger this is often a bad idea.
Disagreement is a fact of life. It is next to impossible to imagine that you will see “eye to eye” with someone else on every single issue. We all see the world with a slightly different perspective. What matters is how you navigate these disagreements. Do you take different opinions as a personal affront? Are you cordial to the other person who sees things differently? How important is it for you to be perceived as always having the right answer (and at what cost)? How open are you to different interpretations of the same set of facts? Are you willing to learn from your mistakes and admit when you are wrong?