Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Nail biting habit definitely is bad in public as well as in connection with health concerns. The best method to overcome nail biting habit is to wear gloves whenever possible. Keep gloves handy and whenever you sit watching television or do something which do not have to use your hands. Second option is to wear clear nail polish. The taste and smell of nail polish do remind you not to bite. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.