The concept of core self-evaluations has been extensively investigated in Western and European countries, nonetheless its implications in Asian countries remains relatively unexplored. To void this gap, the current study investigated the association of core self-evaluations with worry, life satisfaction, and psychological well-being among South Korean youths. To test the research hypotheses, data were collected from 228 undergraduate students of a South Korean university. Existing, established scales were used to measure the research constructs. The results of this study indicate that core self-evaluations were negatively related to worry, while a positive relationship was observed between core self-evaluations and life satisfaction and psychological well-being. The findings of this study suggest that a higher level of core self-evaluations may enhance individuals' well-being. The findings of this study may be helpful for educators and mental health professionals in designing the educational curriculum and training programs that focus on enhancing one's sense of self-worth.