How can you stop nail biting, cheek biting etc.?

Habit: It is usually a habit that requires effort on your part to change. You have to pay attention to what you are doing and when you catch yourself doing so... You stop. It usually takes a month to change a habit..

Breaking habits:: 1. Awareness 2. Desire to break habit 3. Effort and patience 4. Practice 5. Practice 6. Practice 7. Practice 8. Practice 9. Practice 10. Congratulations! here's an interesting article on habits and how to break them: http://www.Askmen.Com/entertainment/better_look_3800/3860_how-to-break-habits.Html.