Everything you need to understand or teach Way of the Warrior Kid 3 by Jocko Willink.
Way of the Warrior Kid III: Where There's a Will . . . is the third book in the series written by Jocko Willinik. The middle-grade novel continues the journey of Marc who is now a seventh grader. His life has improved greatly in recent years because he has chosen to follow the Warrior Kid Path under the advice of his Uncle Jake. Though Marc is in better physical condition than ever, he faces new challenges as he learns about "will" and "ego." The novel's main themes are willpower, the role of ego, evolving relationships, benefits and pitfalls of competition, and the mistake of judging others.