You’d learn to not try to change people, but accept them for who they are. Part of that is not projecting your expectations on them and asking yourself questions like, “What entitles you to want to change something about someone else?” or “Why does it bother you?”. My boyfriend is a nervous person and can be clumsy sometimes. I get annoyed, but it’s hurtful for me to react that way when he’s just being himself. I don’t want him to change who he is just to appease me. He’s not doing anything wrong, my lack of patience is the problem. There will always be a trait in a person that I “can’t handle”, but it’s usually somethinng about myself, that needs to change.