You're not alone. I pick at my skin endlessly and pull out my hair just as much. It's frustrating because I'm aware I'm doing it, but I can't stop. Sometimes I am able to fidget with something, which keeps my hands occupied. But as soon as I let go of that object, my hands go right back to scratching, picking, seeking out something that doesn't feel right so I can pick at it til it bleeds or pull it out. I know it doesn't help my acne and it's getting more difficult to style my hair... sigh.