The significance of managing emotions, their crucial role in guiding human actions, and their impact on the enhancement of individual and social life necessitate the present study. The central question addressed in this research is: from the perspective of the teachings of Imam ʿAlī (peace be upon him) in Nahj al-Balāghah, what is the guiding or potentially harmful role of human feelings and emotions, and how can the positive role of emotions and feelings be more effectively harnessed? The main objective of this study is to identify and analyze the role of positive emotions in the formation of human behavior and to propose solutions, grounded in the teachings of Nahj al-Balāghah, for improving mental health and promoting and strengthening social relationships. This research is conducted using a descriptive–analytical method, and the required data have been collected through library-based and documentary approaches. The findings indicate that positive emotions and feelings—such as affection, hopefulness, joy, and the like—play a significant role in enhancing quality of life, strengthening faith, and fostering social cohesion. Accordingly, by offering precise and well-founded guidance on emotions and feelings, Nahj al-Balāghah can be highly effective in cultivating positive emotions.