This essay examines the opinions of both traditional and modern Islamic academics to provide an overview of the Nafs concept in Islamic psychology. Discussed in relation to other ideas in Islamic psychology like Aql and Qalb as well as modern psychological ideas like self-esteem and self-efficacy are the several kinds of Nafs, including Nafs al-Ammarah, Nafs al-Lawwamah, and Nafs al-Mutma'inna. The significance of Nafs in Islamic rituals like Salah, fasting, and Hajj, as well as its relationship to Sufism, are also examined. The effect of several Nafs categories on mental health is also examined, with particular attention paid to the links between Nafs al-Ammarah and impulsivity, Nafs al-Lawwamah and anxiety, and Nafs al-Mutma'inna and wellbeing. The debate focuses on the consequences for clinical work and scientific inquiry in Islamic psychology and makes recommendations for future Nafs research directions. The notion of Nafs in Islamic psychology and its application to mental health and spirituality are all thoroughly examined in this work