SummaryThe individual-level personality-based theory of self-management failure posits that personality predisposes individuals to self-defeating behavior that, in turn, leads to self-management failure (Renn, Allen, Fedor, & Davis, 2005). To provide a partial test of the theory, a model is hypothesized that operationalized personality with neuroticism and conscientiousness of the Big Five personality dimensions; self-defeating behavior with inability to delay gratification, procrastination, and emotional self-absorption; and self-management with personal goal setting, monitoring, and operating. The model was tested using data collected from 286 working employees and structural equations analysis. Results supported nine of 11 theoryderived hypotheses. As hypothesized, high neuroticism was associated with improper personal goal setting, monitoring, and operating; and emotional self-absorption and procrastination accounted for the relationship between high neuroticism and ineffective self-management. In addition, low conscientiousness was associated with inferior self-management practices, and inability to delay gratification and procrastination partially explained the relationship between low conscientiousness and poor self-management. The findings provide new insight into how high neuroticism and low conscientiousness may contribute to self-management failure. Theoretical and practical implications of the study are discussed.