The process of drug rehabilitation is an important agenda for the National Anti-Drug Agency (NADA). Various efforts have been taken to aid NADA in treating drug addicts. This study focuses on identifying the mental health status and psychological factors to design appropriate treatment strategies. Therefore, this research aims to determine the level of family functioning, cognitive distortion and resilience among clients of CCRC and C&C. A total of 495 clients from these institutions took part in this study. The instruments used were FACES III to measure family functioning, CDS to measure cognitive distortion and Resilience Scale to measure resilience. Results indicate that clients’ family functioning is at a moderate level, clients’ cognitive distortion is at a low level, whilst their resilence is at a high level. This indicates that the rehabilitation programs conducted at the institution had an impact on clients’ resiliency and cognitive distortion.The implications of the study can be attributed to the counseling intervention at NADA.