How do I stop biting my cuticles to the quick?

Cuticle biting. Once you get into this habit it is difficult to break. You could try soaking your finger tips into a paste made of some bitter melon and leaving it on for about 10-15 miinutes and then just wiping the paste off wihtout washing it off. Then if you will not want to put those finger tips into your mouth to nibble at your cuticles it is totally benign as far as side effects go.