Hello FallenIntoDarkness: I bit my nails as a child & teenager, many years ago now. When I became a young adult I wanted to stop. What I did was I always carried a fingernail clipper with me in my pocket. I kept my nails cut very short. And anytime I noticed a break or a rough spot I immediately trimmed it & smoothed it over. This worked for me. Over time I stopped biting my nails & I still don't.