The objective of this study was to classify the latent types of preparation for old age among the baby boomers, based on economic preparation, physical health, and mental health. It also aimed to identify demographic and psychological factors that influence class membership and to compare successful aging and quality of life between latent classes. A total 204 participants (106 men and 98 women) completed online self-report questionnaires, including their representative episodes and emotional experiences during each episode yesterday. The results revealed three latent classes: "mental health symptoms" (13.7%), "insufficient preparation" (22.15%), and "good preparation" (64.2%). Income satisfaction, social support, and perceived burdensomeness influenced the membership of the latent class. Additionally, there were significant differences between latent classes in successful aging, life satisfaction, emotional well-being, and emotional experience in daily life. The findings underscore the necessity of psychosocial intervention to promote successful aging and enhance the quality of life among baby boomers.