From Michael Gelb’s new book: Creativity On Demand: How to Ignite and Sustain the Fire of Genius: 
In recent years, the best thinking on leadership and organizational performance has shifted away from the idea of managing time to recognize the importance of managing energy. One of the pioneers of this shift, Professor James Clawson, of the Darden Graduate School of Business at the University of Virginia, explains, “Leadership is about managing energy, first in yourself and then in those around you.
Jim Loehr and Tony Schwartz, authors of the New York Times bestseller The Power of Full Engagement, came to similar conclusions. They explain,
- “Managing energy, not time, is the key to enduring high performance.”
- “Positive energy rituals—highly specific routines for managing energy—are the key to full engagement and sustained high performance.”
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