Witch Boy

The spirit is willing... Strange but true: I can move things with my mind. Even stranger, but just as true: Lately, I've been looking in the mirror and seeing a face I don't recognize. I've been knocking down trees and throwing boulders without touching them. And I've done some seriously heinous something to my girlfriend in this kind of ... I don't know ... freak out. I don't know what it was. I don't know if she's dead or alive.
You think I'm scared that I'm melted in the head? You don't know the half of it. Melted in the bead would be a blessing, compared to this. I'm not afraid of being crazy. I'm afraid of being whatever I am. What am I?