This study aims to analyze the role of lifelong education in promoting successful aging through older adults’ participation in learning activities that contribute to cognitive, psychological, and social well-being. This research employs a library research approach using content analysis techniques of reputable scientific literature, including empirical studies, meta-analyses, systematic reviews, and conceptual frameworks related to older adult education and successful aging. The synthesis of findings indicates that older adults’ participation in lifelong learning is positively associated with enhanced cognitive functioning through the mechanism of cognitive reserve, which helps maintain mental capacity and reduce the risk of cognitive decline. Furthermore, engagement in educational activities improves psychological well-being, as reflected in increased life meaning, self-esteem, and reduced feelings of loneliness. From a social perspective, lifelong learning strengthens social interaction, community integration, and reduces social isolation among older adults. The findings also highlight that programs such as Universities of the Third Age (U3A) serve as effective models for supporting active and productive aging. Thus, lifelong education is positioned as a crucial protective and promotive factor in achieving holistic successful aging. This study emphasizes the importance of inclusive educational policies for older adults to enhance quality of life in later years.