Psychological well-being is the fundamental cornerstone of a healthy life and a society free from stress and anxiety. Despite significant technological and medical advancements, modern societies—even the most developed nations—often fail to secure lasting mental peace for their citizens. This research, employing a descriptive-analytical approach, investigates the influence of Quranic teachings on the mental health of society and explores how divine instructions can foster psychological balance. Data were collected through a documentary and library-based method, analyzing authentic Islamic texts, including the Holy Quran and Hadiths, alongside contemporary psychological literature. The findings indicate that adhering to Quranic principles provides effective cognitive and behavioral strategies for maintaining psychological stability. Spiritual faith, trust in God (Tawakkul), and ethical social conduct serve as significant protective factors against modern psychological disorders. Integrating these authentic religious teachings into mental health frameworks can promote a more harmonious and resilient society. Achieving true mental equilibrium is deeply rooted in following the comprehensive guidance provided by the Holy Quran.