Cursing exists in every culture and language but has been prohibited as a taboo in every society due to its adverse effect. Teenagers’cursing nowadays is so pervasive in their everyday life that it has become a language violence rather than an emotional catharsis or a confirmation of ingroup intimacy to the effect that its excessive use exert a strong influence on both its speaker and listener psychologically. Cursing is a way of expressing the anger and a predictable phenomenon in social-cultural contexts such as psychological development, personality, religion, compensation and punishment, etc. This paper as a methodological research suggests that an expressive writing can reduce teenagers’cursing. The expressive writing is a heathy way of pouring out the charged emotion, an educational process of helping writers self-controlled in cursing by experiencing the emotional change, and finally a therapeutic process of resulting in the holistic change in their psychology, cognition, behaviour and mind. Through our writing experiment and analysis of its result we found out that the participants began to recognize the harmful effect of cursing, thereby reducing its abusive use and that they became to control and manage their emotion more easily. Moreover, we observed that the critical self-examination was leading them to a wider understanding of others and to a gradual personality change.