Relentless by Tim Grover (544)

Relentless by Tim S. Grover is a powerful and uncompromising guide to developing the mindset required to excel in any competitive field. Known for training world-class athletes such as Michael Jordan, Kobe Bryant, and Dwyane Wade, Grover shares the same mental conditioning principles he used with the greatest champions in sports. Direct, raw, and transformative, Relentless is a book that challenges readers to push past limits, embrace discomfort, and rise to the highest level of performance.

At the heart of the book is Grover’s famous three-tier classification of competitors: Coolers, Closers, and Cleaners. Coolers are good, Closers are great, but Cleaners are unstoppable—the individuals who dominate their field through relentless drive, discipline, and an unshakable mentality. Grover explains that being a Cleaner is not about talent alone; it requires a fearless mindset and an obsession with excellence. Through stories from elite athletes, he illustrates the traits that define true mental toughness.

One of the most compelling aspects of Relentless is its focus on internal strength rather than external validation. Grover emphasizes that greatness comes from within—from mastering emotions, trusting instincts, and eliminating excuses. The book encourages readers to pursue their ambitions with complete commitment, even when faced with pressure, criticism, or doubt. Grover’s principles are straightforward but intense: stay focused, work harder than anyone else, and never be satisfied with good enough.