Relentless: From Good to Great to Unstoppable by Tim Grover (2013)
This is a book full of messages aimed at motivating you to go beyond yourself in pursuing excellence. Very similar to books written by Tony Robbins, which I also have in my library. The only big difference is that Tim Grover has focused on professional athletes, and for those who enjoy sports, this may be an even more powerful motivation that built on corporate careers.