Currently, mental health clinicians lack training in spiritual and religious competence, while counseling psychology research does not give adequate attention to the spiritual and religious concerns of clients seeking mental health counseling. In order to improve the quality of mental healthcare, I argue for more research and training to better understand clients’ spiritual and religious needs. I review existing approaches to mental healthcare that integrate spirituality and religion, then outline my own survey- and interview-based research. My study assesses clients’ levels of religiosity and spirituality, discovers the role of spirituality and religion in their mental health, and finds out their experiences working with mental health clinicians. My data indicates that spiritual and religious interest often intersects with defining life events, such as traumatic experiences and existential crises, and that mental health clinicians should be better prepared to understand the role of spirituality and religion to support clients’ psychological and spiritual health.