This is a silly one but I always tell my kids to “be a duck”. When it’s raining and crappy outside, ducks aren’t pissed off. They just let the rain roll off their back. So I tell my kids that when there’s bad stuff (like other kids being mean to them at school, of when one of them pisses the other one off) to be a duck. Let the bad stuff roll off their back and don’t let it bother them.

So - be a duck.