How can i stop biting my nails and fingers? im 21 and ive had this habit since i was like 5.?

Tell every one around you ( friends - family ) that if they saw you biting your nail to tell you to stop doing that i mean involve them to remind you to stop doing that! another thing you should try bring chili peppers rub the seeds all over your hands you will never bit your nails again!!How can i stop biting my nails and fingers? im 21 and ive had this habit since i was like 5.?
buy some of that nail polish that tastes bad when u put it in ur mouth. buy some of the strengthening nail polish that makes it impossible to bite them because they r so strong. when u catch urself going to bite them tell urself to stop, and put something in ur hands to take ur mind off it. it takes a while to get used to it, im just starting to stop biting mine. *it takes 41 days to break an old habit and 23 days to make a new one*How can i stop biting my nails and fingers? im 21 and ive had this habit since i was like 5.?
you can get stuff from the chemist and you put it on your nails and it has a really bad taste to it.