Prevention of nail biting

I am always biting my nails. Is there any way to stop this?

There is no specific therapy to stop nail biting. First the facts. Nail biting is both unsanitary and can cause severe damage to the nail and surround skin. More important, it can lead to infections and be quite painful. If the activity is prolonged, the nail and skin can become unappealing and look deformed.

Some patients bite their nails because of anxiety, stress or an underlying mental health problem. To stop nail biting, some patients may benefit from the use of selective serotonin reuptake inhibitors. There are some who advocate behavior therapy to stop nail biting- I am not sure how simply taking bullshit for an hour for many weeks can do that-in any case, behavior therapy is also expensive. 

I would suggest keep your hands occupied all the time. Applying stinking foul smelling solutions and creams on the fingers does not work.