This study aims to determine the relationship between emotional regulation and the psychological well-being of diabetes mellitus patients in Yogyakarta, Indonesia. A total of 53 patients with diabetes mellitus participated in this study. This research uses the quantitative method. Psychological Well-being Scale and Emotion Regulation Questionnaire (ERQ) is used to measure the variables. Statistical analysis showed that emotion regulation had a positive significant correlation with psychological well-being. Coefficient correlation between emotion regulation and psychological wellbeing of r = 0.771 with p = 0.000 (p< 0.01). The relationship between the two variables showed that the higher the emotion regulation score, the higher the psychological well-being level.

Keywords : Emotional Regulation, Psychological Wellbeing, Diabetes Mellitus I. IN