2. Elon Musk — Maximizing Productivity Through Rigorous Time Management

Elon Musk, the entrepreneur who leads Tesla and SpaceX, is known for establishing his own rules for how to use time. He works 80 to 100 hours a week and sleeps only about six hours a day, but he pursues thorough efficiency in his work. For example, he imposes rules on his employees, such as avoiding unnecessary meetings and phone calls as much as possible, and allowing them to leave meetings early if they feel they are not necessary. Musk’s email stating, “You should walk out of meetings where you don’t add value. It’s rude to waste time,” is famous. Through this thorough optimization of time, he has achieved high productivity and success by simultaneously managing multiple companies and innovative projects.
Key point: His resolute stance on protecting his own time and that of his organization enables innovation and the achievement of goals.
— Reference : businessinsider.com