You're a loose cannon emotianally, aren't cha? Your moods are all over the place, leaving people confused about what the hell your problem is. But it's simple as this; you see things in complete black and white terms. You feel highs and lows of the mood spectrum with passion.
Thus, you're inclined to bouts of anger and rage, rather than just being a little peeved like regular people. But most of the time, you probably take your anger on yourself by self mutilating.
You need extensive psychological help, but because you're not delusional, or throwing yourself out windows, no one really notices.
Sucks, don't it?