I have terrible anger management.

When I get really mad, I almost always end up punching something really hard and say things that I really regret later on. I've punched a hole in the wall twice. I've broken 2 mirrors. I've smashed an Xbox. I'll sometimes just slam my fist down on a table or other surface really hard and I've sprained my wrist doing so and put a dent in a table. I've broken just about every electronic I've owned out of anger. My phone (3), my computer (2), countless remotes, etc. When someone makes me REALLY angry, I'll usually snap at them and say horrible things or just punch them really hard and get away from them (only men that I'll actually hit, mostly my brother.) Sometimes if I get really, really angry, I'll hurt myself, like bite myself on the arm or punch myself in the head or something. Sometimes I slam my head on the wall or table, but it's really rare and only in times of uncontrollable rage. The only time I'm considerably calm is when I'm driving. I have excellent road rage control while everyone else seems to be HORRIBLE at that. Especially my sister. My sister is a psychopath and she has worse anger control than I do honestly. She has no empathy for any human being. Maybe it runs in the family?
I've been told take a deep breath, count to ten, punch a pillow, whatever, but it just makes me even more angry. The only thing that actually calms me down is time. Other than that, I have NO way of releasing anger, not even exercise. I can't do it because I'm too mad to even concentrate.
I have pretty bad depression so that may be why, and my dad has always been worse than me with anger. I used to think other people got this mad if not way more, but apparently everyone handles their anger so well and I'm just a freak. Am I normal at all?