There are not many nail biters out there who wouldn't agree that the habit is annoying, uncomfortable and an embarrassing problem to cope with.
Simply put, there is no "cure", but there are methods and tricks that do work for some.
The most important ingredient in this is will power of course, though this alone will be unlikely to be enough to carry a sufferer through.
So, let's have a look at the options that are out there, and why they have worked for many people.
Hypnotherapy has been proven to be a success with two types of therapy generally available: One-to-one with a trained therapist, or through a course of self-help recordings.
They apply much the same techniques in relaxing one's mind and focusing on the issue to be dealt with.
From here, the biter undergoes techniques to place suggestions and associations into the subconscious mind that deter the act of biting.
Whether openness to this being the solution is the driving force behind its success, or the application and processes used, it doesn't really matter.
All that counts is that it is successful.
A similar method, in so much that it also tries to unravel the secrets of the subconscious, is behavioral therapy.
Also a psychological approach to find a nail biting cure, it consists of Habit Reversal Training, that attempts to take the bad habit and replace it with a more innocuous one.
Habits supplanted include the clasping or clenching of hands, drumming of fingers, or even fiddling with one's hair.
Less successful than hypnotherapy, patients often regress to their old habits once the controlled course is over and need repeated treatment.
Nail biting creams can be very effective for some.
These foul tasting creams are applied to the fingers, and will instantly repel the biter once they place their digits in their mouths.
Nail polishes are also used quite often, though do not seem as effective, and the creams serve to deter biting of the whole fingernail, cuticle and surrounding skin, which the polish may not.
These are not a perfect solution however, as it is not unusual for some people to actually grow accustomed and indeed develop a liking for these.
And there is of course the constant necessity to have to remember to apply the cream every day.
Physical barriers themselves can also play a part in weaning a sufferer off the habit.
Tricks such as wearing gloves, plasters and sticky tape will prevent the biting taking place just as effectively as a cream.
However, whether people can cope with having these very visible items out in public is down to each individual.
That many sufferers can be afflicted with anxiety and stress, it is not always practical.
It can however be one of the treatments used when at home relaxing, or when going to bed for those rare nail biters who continue as they sleep.
Whichever method or trick is used, it is important to stick with it.
There will not be an instant cure overnight, nor will there be an easy effortless solution.
As with anything, the change has to happen from within, before bearing out.