Nail biting is that bad habit that does not even look good. Moreover, it exposes the cuticle to the germs and makes your kid more prone to the risk of infection.
Therefore, you should try to suppress this bad habit of your kid and for that you can...
Give me heart that doesnt’ sigh;
Give me eyes that don’t cry;
for none asks when the heart bleeds;
life lies scattered as if unfertile seeds
.....Anupam Agnihotri