Tim S. Grover is the CEO of Attack Athletics, Inc., which he founded in 1989, and author of the international bestseller Relentless: From Good to Great to Unstoppable. World-renowned for his work with Michael Jordan, Kobe Bryant, Dwyane Wade, and thousands of athletes and business professionals, he appears around the world as a keynote speaker and consultant to business leaders, athletes, and elite achievers in every field. He is based in Chicago.