
The Art of Resilience: Strategies for an Unbreakable Mind and Body

The best way I can describe the feeling is a Finnish word, “sisu”—the mental strength to continue to try even after you feel you’ve reached the limits of your
Timothy Ferriss • Tribe of Mentors: Short Life Advice from the Best in the World

The ability to persist, to stay motivated and engaged, is directly tied to toughness. How do we keep going, despite ever-increasing stress or fatigue?
Steve Magness • Do Hard Things

Tools Of Titans: The Tactics, Routines, and Habits of Billionaires, Icons, and World-Class Performers
Timothy Ferriss • 2 highlights
amazon.com