The antonyms for "manage oneself" are uncontrollable, undisciplined, disorganized, and unregulated. When someone does not manage themselves, they are often considered impulsive, irresponsible, and unreliable. These individuals lack self-discipline and often struggle to complete tasks or commitments on time. They may have difficulty making decisions, setting goals, and prioritizing responsibilities. Without managing oneself, life can become chaotic and overwhelming, leading to a lack of focus and productivity. It is important to practice self-management skills to achieve success, maintain a healthy lifestyle, and cultivate positive relationships with others.