The book is simply outstanding. Even as an adult, I found a lot of value in the lessons it intends for kids.
The story itself is entertaining, but the underlying lessons are what make it shine. What I particularly appreciated about it is the focus that is put on mindset and discipline.
Ugh, really? Discipline? Snore!
Yeah, I know, but Jocko does a great job of wrapping it all together in the story so that by the time a kid realizes that discipline is what's being taught, it's too late and they've already been hooked. Over the course of the story, Marc learns the benefits of self-discipline and hard work.
The emphasis on mindset and self-discipline serve to encourage kids to hold themselves to a higher standard and to constantly improve themselves.