I try to remember that whatever happens, another person’s behavior honestly and absolutely has nothing to do with me. It is not easy to do this! But the more I can catch myself before I either go off on an internal rant and upset myself further or go on an external rant and make things worse, I do this, especially seeing as when the interaction is over, I don’t want to be the one who’s grumbling over something I can’t control while they go off in peace becuase they’ve left it. It’s like hitting yourself with a ball peen hammer, otherwise. Why do that?