Edit: I wrote a kind of long post, then realized, "Holy shit I didn't even answer your question. "

In a nutshell, if you're consistantly beating your game over a lot of hands, you're probably playing better than your opponents. Now, this doesn't necessarily mean you're playing correctly in all cases, but you're making less costly mistakes than they are.

The idea of playing correctly in the context of aok's post is probably more along the lines of if you finish a session down a lot of money or get knocked out of a tournament because of a bad beat or something in a situation where you played the best you could and couldn't really help it, then it shouldn't bother you or piss you off, because there's nothing more short of being psychic that you could of done about it.

I should go back and reread this before I post it, but fuck it. Hope it helps.