Purpose: Aging is a period in the life cycle experienced by everyone as well as an entitlement that we’re recognizing more as a society. Not only does aging bring experience and wisdom, but it also brings freedom. This study aimed to investigate the mediating role of gratitude and its relationship between successful aging and psychological well-being. Method: A sample of 142 participants was selected using purposive sampling. The age range of the participants 60-85 years. Data was collected through validated questionnaires assessing successful aging, Psychological Well-Being, and gratitude. For statistical analysis Correlation were conducted to examine the associations between these variables, and hierarchical regression analyses were used to assess the impact and mediating role of variables. Results:The findings of the study indicated a positive correlation between successful ageing, gratitude, and psychological well-being. The study also found that there was a statistically significant relationship between successful ageing and psychological well-being on gratitude, as indicated by the combined variance explained. The findings of the study revealed that there was a positive and partial mediating effect of gratitude on the relationship between successful ageing and psychological well-being. Conclusion: This study highlights the importance of successful aging, Psychological Well-Being, and gratitude in the lives of elderly individuals. It underscores the role of gratitude as a mediator in promoting Psychological Well-Being and offers insights into the influence of attachment styles. These findings have implications for tailored interventions aimed at enhancing the well-being of older adults and may extend to culturally diverse populations in multicultural societies.