Predictions indicate that the Brazilian population will be predominantly elderly in the future and will live longer. However, evidence from the personality field suggests that people become more dogmatic, less sociable, less curious, and less outgoing as they age, making it difficult for them to live a long and quality life. This article summarizes evidence on the relatonship between personality and sucessful aging, examines current discussions regarding interventions aimed at personality changes, and presents an intervention proposal focused on healthy aging. In addition to naturalistic changes in personality, it is possible to promote long-term changes in functioning patterns by adjusting the present functioning through psychotherapy and other interventions. Personality-based interventions can foster the development of aspects of healthy aging. These evidences highlight the potential of the Big Five Factor model as a framework for thinking about interventions aimed at changes in personality.