fa تخصصي Special پژوهشي Research <p><strong>Objective:</strong> Diabetes is a chronic disease causing not only somatic complications like hyperglycemia, but also increased psychological consequences and impaired psychological well-being in diabetics. Various psychological treatments have been applied so far to reduce the mental symptoms and promote the mental well-being of these patients. This study aimed at determining the efficiency of dialectical behavioral therapy in psychological well-being of diabetic patients.</p> <p><strong>Materials and Methods:</strong> Using the purposive sampling method, 20 diabetic patients were selected and assigned randomly to two experimental and control groups. Ryff&#39;s Psychological Well-being Questionnaire was used to collect the required data.</p> <p><strong>Results:</strong> Our findings indicated that the dialectical behavioral therapy was effective on psychological well-being of the diabetic patients. This method proved to be effective in our research hypotheses regarding different aspects of psychological well-being, i.e., self-acceptance, positive relations with others, self-autonomy, environment domination, purposeful life, and personal development. <strong>Conclusion:</strong> Due to the effectiveness, it is advisable to use this therapeutic modality as a complementary method to other therapies.</p> Dialectical behavioral therapies, Diabetes, Psychological well-being. 124 132 http://ijdo.ssu.ac.ir/browse.php?a_code=A-10-30-117&slc_lang=fa&sid=1 Zahra Baramesipour No Department of Psychology, Yazd Science and Research Branch, Islamic Azad University, Yazd, Iran. 2. Department of Psychology, Yazd Branch, Islamic Azad University, Yazd, Iran. Mansoureh Nasirian Yes Psychiatrist, Department of Psychiatry, Shahid Sadughi University of Medical Science, Yazd, Iran. Najmeh Sedrpooshan No Assistant Professor, Counseling Department, Islamic Azad University of Khomeinishahr, Khomeinishahr Branch, Daneshjou Blvd, Iran