Our expert says:
Stress and boredom are both the commonest triggers for nail biting. The last time I recommended that anyone see a hypnotist, there were severe hailstorms in Hell, for reasons you'll discover if you search the archives of this forum on "hypnotherapist" and "hypnotherapy". Again, CBT ( Cognitive-Behaviour Therapy_ works far better every time, and would also help you deal better with stress and boredom.
Joy's suggestion is interesting. Also, have you tried putting the intensely bitter chemicals on your nails, so the horrible taste reminds you when you're just nibbling without thinking --- and get an alternative --- worry beads or a stress ball, r something else to fiddle with then stressed or bored ( and carrot or celery sticks to nibble, similarly ).
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