This research is focused on a new understanding and therapy process of narcissistic personality disorder on the basis of Self Psychology. Our age and culture are mainly characterized by the modern orientation of people called ‘narcissistic personality.’ Even the christians are not exceptional in this trend. Confrontation and struggle replacing communication and compromise symbolize the people with narcissistic personality. As a consequence, they are tended to make ill–guided all interpersonal relations including family and christianity. Meanwhile, as Kohut argues, a desire for healthy and happy self–development without doubt is the basic motivation of human psychology. This is the main reason why this research is focused on how a healthy narcissistic personality is formed, and how an ill–guided one can be cured. For this purpose the research applied a case study. Two female clients aged 40s and 30s took part in the research. The Self Psychology places an emphasis on therapist and empathy in treatment process. If they share a common value, the clients will experience a selfobject transference by the therapists. Furthermore, the clients will construct their own psychological structure through transmuting internalization. In addition, the research also applies Dr. Merl Jordan’s methodology for a pastoral theological reflection. Hopefully, the result of the research is to make possible deeper understanding on the christians with narcissistic personality disorder and to provide them with better therapy.