The specific purpose of this study is to provide empirical basic data on the development of more useful psychological and emotional performance improvement strategies for Taekwondo-breaking players. To this end, the moderating effect of self-leadership on the relationship between positive psychological assets and the perceived performance of Taekwondo-breaking athletes was verified through PROCESS macro Model 1 (Hayes, 2022). This study has verified the effective moderating effect of self-leadership in terms of behavior-oriented and constructive thinking patterns in the relationship between positive psychological assets, such as hope or resilience, and the perceived performance of Taekwondo-breaking players. Based on the observations, the need to perform effective leadership based on the unique characteristics of each player or team was emphasized in order to help players utilize appropriate levels of self-leadership strategies.