Hi.. You must be really in a very bad mood to stab your self.. If the injury was not very deep and not involving the muscles, tendons, vessels or the nerves, it will heal soon.. Take care to prevent infection.. If the injury is slightly deep, there are chances of complications such as fascitis or compartmental syndrome developing.. Antibiotics and a tetanus toxoid may be needed.. So I would suggest you to check with a doctor.. You also may benefit by a counselling by a psychologist for stress management..