I think populations will crash, either gently through fewer kids, or violently through war and disease. That will likely throw us backwards technologically, maybe not.
Or, who knows, maybe the population will stabilize and we get everything going in the right direction, then an asteroid hits.
There are two answers for me. Sometimes I stop and think my way out of it and am ok after a couple hours, I can let it go.
Sometimes I just get angrier and angrier as I think about it, and in that situation I must talk to the other party. That usually takes a day or two because it takes me that long to realize I’m not gonna calm down, am still mad. But every time this has happened, the other party has apologized because they, in the same intervening time, have realized they were being asshole-ish.
Nobody I know takes that long to tell me, if I am being asshole-ish. It can take me an hour or so to calm down and apologize.
All of this assumes good intentions on all sides. My ex, you couldn’t back down or apologize with him, he saw it as weakness and would mock, was terrible at fighting.