Next time you’re in the midst of a fight, you could imagine the alien of yesterday coming to visit.
The alien takes no sides, and knows no history. All it can do is look at the situation from the outside, and say what it sees about your part in it all.
You might like to consider what the alien would have to say to you.
It could be quite different from the way you see things.
Especially so when you’re sure that the other person is wrong, and that you are right.