When I’m mad, or sad, and someone else seems to be connected to my mood, I think about what I did to cause them to do whatever made me mad, or sad. Thinking backwards in time to the point where I flipped into a not-happy place… Had that person also? Did they flip first?
When it’s difficult to get along because of misunderstandings, one person speaks unclearly, or says things that don’t mean the same thing to the other person. We both do it… everyone does it. But not everyone takes it as an opportunity, or a reason to get mad, or sad.