Can't Hurt Me: Master Your Mind and Defy the Odds
This is the best ever written on self Discipline and how a common person reached its highest potential.
In Can't Hurt Me, he shares his astonishing life story and reveals that most of us tap into only 40% of our capabilities. Goggins calls this The 40% Rule, and his story illuminates a path that anyone can follow to push past pain, demolish fear, and reach their full potential.
This is book is available on amazon You can purchase it from there.