The author's intent is to distinguish the concept of myth from fantasy, and to focus on the degree by which myth is scarcely recognized in our clinical treatment. The role in unconscious conflicts, character structure, and enactments, as a result of the ‘personal myth’ has been largely overlooked and has been over-shadowed by the concepts of unconscious fantasy. Undoubtedly, unconscious fantasies are predominant mechanisms in the expression of unconscious wishes, and in the search for pleasure. Yet, the subtle role of the ‘personal myth’ in certain cases present a more difficult challenge to the treatment. The defensive structure of the ‘personal myth’ is more adhesive and encapsulating, more resistant to interpretation and modification. The ‘personal myth’ as expressed through screen memories and autobiographical material has a logical and coherent story and presents a pseudo reality. The organizing quality of the myth integrates id, ego, and superego ideation, drives and wishes into a cohesive mental system. (Kris, 1956). The case of Mr. M is presented as a means of elucidating the subtlety by which a myth rather than fantasy has established itself in the psychic structure and its dominant role in his psychic organization.