I destroy things

Ever since I can remember, I've always picked at things. I've always destroyed things. It's like an uncontrollable habit. Sometimes I do it without even noticing it.

In class, I'd be holding a brand new pencil in my hand, and after a few minutes, there won't be any eraser left. I'd have picked at it and tore it up into tiny little pieces.

It's not that I'm angry, and I'm not always bored either. It just happens, no matter what mood I'm in.

I've tried to do the opposite- to create things. To build things. It's impossible. I'll try to draw, and I'll end up scribbling all over it just to ruin it. When it recently snowed this christmas, I thought I would try to make a snowman. No matter how hard I tried to make it, I kept destroying it over and over. I thought I could make a snow fort. I got about 1/4 the way finished, and decided to step all on it and just ultimately destroy it.

I either have an urge to destroy something, or do it without meaning to. Someone may make something, and I'll mess it up without even noticing and people hate me for it. (That explains why I didn't have many friends in preschool(playdough)).

My mother always complains of how I destroy things. She gets so mad. She's learned not to buy me new furniture. I'm like a cat. I scratch it up. My bedside table has holes and dents and strips or wood missing from it. My wooden headboard on my bed has been picked at and I carved random shapes into it with my fingernails. My PS2 controller barely has a start button because it has been picked off.
This habit is REALLY bad. Mom says I should go into the destruction business, you know like bulldozing houses and wreckingballs, etc. I know I don't want to do that though.

Does anyone else have this problem?? Is this normal? Can someone helps me please?!?