I forgot to add one of my pet peeves: People who claim to know who they are or pressure other people into finding out who they are.
The fact of the matter is, NO ONE knows who they are. If people actually did, the world would be a utopia. We simply create ideals and attempt to live up to them.
The problem with the world is that too many people claim to 'know' themselves and religiously stick to this standard. They're setting definitions for themselves which may not necessarily be true, because what they believe about themselves may be a lie.