What can I do to end my nailbiting habit?!

Question:
I (Brian) chew on my nails when I am nervous/bored. It is a gross habit and I am looking for some tips on how to end nailbiting.
Answers:
Sally Hansen makes a clear polish that has a very nasty taste so when you stick your fingers in your mouth the taste makes you pul them out.

It is also safe for kids who suck their fingers.

Other Answers:
Stuff your fingers knuckle deep in your ***.The natural aroma will catch your attention anytime your fingers near your face.
Answers:

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What can I do to end my nailbiting habit?!

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