Remember, it's an RPG, not APG, or my self-coined term, Avatar-Playing Game. What do I mean by that?
Well, to put it simply:
Your character is not, should not, and will hopefully never be an extension of yourself, who you'd like to be. And if they are, it's best to head over to your profiles and either delete them, or edit them-heavily. If a char has the perfect personality (the dream one you wish you had), leads their best friends into epic adventures and/or battles without getting scratched (as you'd like not to be), has the best strategy ever and the friends to help out with it (like you want), super-awesome powers AND equipment AND fighting skillz...
You are in danger of APing.
That may be an extreme case, but if you realize you are starting to help out your characters and their goals even when doing so is completely ridiculous (as in, having random Le-Matoran pull out their EPIC SWORDS OF DOOM and cut down the Nui-Rama who just invaded without batting an eyelash), feeling hurt when someone else hurts/injures your char, and/or realize you like your char's personality more than your own, then congrats. You just realized you've been APing, and now, you can do something about it.
-Der Blitz