I'm 16 now, but back in 4th grade I started biting my nails. Then it grew to biting my cuticles. And now it's just out of control. I actually bite the skin off the undersides of my fingers. I just completely rip it off in strips, and the undersides of my fingers are so callused and red and disgusting. I'm so disgusted with how they look, and I'm constantly hiding my hands from people. It hurts to bend my fingers because the layers of skin are so thin. I've tried stopping, but I just have no clue what to do. If I eventually stop, will the skin grow back to normal?