Modern Islamic Institution Darussalam Gontor has begun to mandate its selected class four students as dormitory managers in adolescents who are vulnerable in adapting of new things. Based on this problem, the researcher wants to examine the effectiveness of peer counseling on class four dormitory managers in overcoming the problem of adapting as manager Dormitory. This study aims to 1) analyze the problems they face in adapting as manager Dormitory 2) explain the effectiveness of peer counseling in overcoming the problem of adapting to the new mandate in Pesantren environment. To achieve its objectives, researcher used qualitative methods through interviews with several managers and related parties as well as documenting relevant sources. The results of this study are 1) The problems faced are divided into 2 namely self-adaptation as managers and social adaptation to their responsibilities. Internal problems cause such as: embarrassed, awkward, inferior, and nervous. 2) Regarding the effectiveness of peer counseling in overcoming this problem, it can be supported by various programs such as regular meetings between administrators, joint breaks per dorm zone, and daily friendship between them. It can be concluded that peer counseling is one of the effective methods in dealing with adolescent problems, especially as new administrators of the hostel. This research is expected to understand properly the adaptation of dorm managers’ challenges in carrying out their duties and help overcome existing problems.