Final answer:
The ability to master oneself is essential for effective leadership and management.
Step-by-step explanation:
The ability to master oneself lies at the heart of effective leadership and management of others. This involves developing a positive mindset, cultivating self-awareness, and practicing self-regulation. Having a growth mindset, resilience, and belief in one's own capacity to handle challenges contribute to career success. Additionally, focusing on one's strengths rather than weaknesses can lead to consistent, near-perfect performance in tasks.