Elevated stress levels among teachers are linked to both physical and mental health issues, which in turn affect their job performance. In addition, teachers' ability to regulate emotions influences their instructional effectiveness and well-being. Moreover, psychological well-being is crucial for teachers' satisfaction and success, influenced by factors like burnout and personality traits and external circumstances impact teachers' stress levels and job performance, affecting their professional trajectory. Understanding these dynamics holistically is essential for fostering teacher well-being and enhancing their effectiveness in the classroom; therefore, this study explores the intricate connections between various factors influencing teachers' professional success. To collect the data, the researchers used four questionnaires: environmental factor, Big Five personality traits, teachers' emotion and psychological well-being questionnaires. Rigorous SEM analysis was employed to discern the direct and indirect influences of teachers' emotions, teachers' personal traits and environmental factors on teachers' psychological well-being and their professional success. The findings revel that teachers' emotions, teachers' personal traits and environmental factors significantly predict teachers' psychological well-being and their professional success. The study suggests that incorporating emotional regulation training into professional development can equip teachers with skills to navigate challenging situations, thereby enhancing their well-being and effectiveness and establishing work environments that recognise and support and address the emotional needs of teachers can foster a positive atmosphere conducive to both well-being and professional growth.