Dealing with stress is altogether different for different people. Every individual has their own perceptions and own way of handling things. The comfort level of every individual is unlike the other thus, every person handles their stress in their own way. Usually when people get nervous they try different ways to overcome it. Like, some people scratch their head, some frequently go to toilet, few of them start shivering, many of them grab chocolates, and some of them go for walk. But some people start nail biting. It is just not common in kids but even adults follow this bad habit.
Nail biting is often associated with low self esteem and nervousness. It is just not linked with psychological disturbance but it also affects your fingers and teeth. They ruin the health of your fingers and teeth. [...]