Repeat back what you heard before you argue. A lot of fights end right there.

Most arguments are two people disagreeing with something the other never said. Saying back what you understood sounds too simple to help, and it works because it either clears up the misunderstanding on the spot or shows the other person they were genuinely heard, which takes most of the heat out of the exchange. You also find out whether you were listening. Plenty of fights end right there.

Try it in your next disagreement, before making your own point. Say what you think they mean and ask whether that is right.