Just curious about this. I'm terrible about biting my nails and clenching my jaw! It's like a really horrible habit. I've tried to stop so many times and have actually stopped biting my nails for long periods of time. Contrary to what I hear, I started biting my nails during middle childhood. I can remember when a nail-biting friend told me how much fun it was and I tried it. That's when I started. I am so ashamed of this habit; it's really difficult for me to write about it. Does anyone else have the nail biting habit or clenching habit? Has anyone been successful with stopping these habits? I did find something about causes of the habit, "Nail biting can be a sign of anxiety, chronic tension or uncontrollable compulsion." I know that I have a very compulsive personality and that's probably my problem with this habit. Any suggestions? HELP please! I'm going to bed now (10:15 PM), and I'd appreciate having this bumped for responses. Thank you.