“How do you guys deal with not letting the behavior of others destroy your inner peace?”

It’s a tough one for sure. One of the things I do that (sort of) helps is to resist the urge to argue. Don’t let people pick fights. “Is that what you think? Ok then.”

When people tell you what you feel is wrong, maybe you could turn that into a conversation about why they’re being asshats, rather than about how a person ought to be feeling (which is a fruitless discussion anyway). Telling people they’re wrong isn’t a friendly thing to do. So if you’re with a friend, you can address that. Talk about the fact you’re fighting instead of having the fight. It can help cut to the chase.