If you are reacting to someone’s behavior by feeling extremely irritated or judgmental, it may be that the other person is mirroring you in some way. The usual first response is strong denial – there’s absolutely no way you would do such a thing or act in such a manner. But keeping an open mind, and remembering to release judgment of them — as well as yourself — will help you learn more about who you really are.
Action: Think about the behavior or characteristic of the person who most often gets on your nerves. Now be willing to consider that something is being reflected back to you. Writing it out may be helpful.