...this is my new favorite thought or phrase. Sometimes I say it. Sometimes I just think it.
I get in trouble when I push my agenda when my emotional mind is ruling. Much better to walk around the block or sleep on it and then invite my rational mind to take the wheel.
Stepping away is as important as stepping in, as engaging, if you are upset, or angry, or extra emotional. Nothing good will come and a resolution, or even a compromise, is very unlikely.
It's not that you're apathetic, you just know that the conversation is less likely to escalate if it is postponed. This, in itself, can change everything.