We live in a society where negative feelings like anger, sadness, upset, frustration, fear, tension, scared often overwhelm our routine life. Emotions are not something that can be easily hidden, whether positive or negative. It invariably finds its expression in some way.
Constructive expression of negative emotions is an effort by itself. It has to be learnt. The earlier the age, the better you learn to express them in an acceptable way. Children and even adults who are introverted, socially inhibited by nature may find difficulty in expressing emotions amicably.
The ability to express emotions in some form, whether speaking, writing, through art, is essential. Otherwise, they may damage the very existence of a healthy living. How to do that? The rule is not do damage you or others but choosing a safe way to express these emotions. Direct verbal expression, writing, painting and your own creative ways can help you to push out these negative emotions from your system, from time to time, before they damage you.