William Carlos Williams’s long poem, Paterson(1969), not only follows a traditional hero``s story line but also presents the protagonist Dr. P as a post-modern everyday hero. According to Joseph Campbell, Lorna Catford, and Michael Ray, an ordinary man can be a hero if he meets with difficulty and gets an insight through mental change in his life. This paper, therefore, observes how Dr. P goes through three stages, separation-initiation-return, suffers from psychological ordeals and frustrations, and finally resuscitates himself through awakening in the Passaic river. In this process Dr. P realizes that man and nature, man and woman, and the strong and the weak are not in a subject-object relationship but in a symbiotic relationship. Reading Paterson as the myth of a post-modern hero, this paper ultimately asserts that Williams presents Dr. P as a model to help readers set out their own journey to face their life issues with a new emphatic vista to understand nature and fellow citizens through an active penetration.