This article joins the discussion about the role of positive psychology in foreign language learning. The aim of this paper is to present the results of a quantitative study conducted among a group of Polish older adults (aged 55+). The research goal of the present study was to investigate older people’s subjective feeling of well-being connected to foreign language learning as one of the ways of improving their quality of life. The research used a questionnaire as the research tool, which consisted of a modified version of a questionnaire widely used for testing satisfaction with language courses. The findings of the research clearly show that foreign language learning has an irreplaceable role as one of several non-pharmacological strategies utilised to improve the aging process and promoting positive aging. The results also indicate that seniors’ overall satisfaction and subjective feelings of well-being can be greater when attending foreign language classes at an older age. Foreign language learning, therefore, creates an environment that can enhance the quality of life of older adults.