Well. Turns out, sometimes we just can't.
We don't always want the same things. Or if we do want the same thing, only one of us can have it. The other party is plum out of luck. Sometimes it really is a Zero Sum Game - I can only win if you lose.
Yikes. That's kind of harsh. How to navigate that swampy swamp? Try to be humble, gentle and responsive. I know. Not really helpful.
Sometimes we are truly at total opposite ends, and any compromise seems impossible.
What to do then? Not sure.