Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
It is a simple read, hardly takes 3-4 hours. Yet the clarity with which the author has presented his ideas is something missing in most of the self-help books out there. This is significant for adults as well, so I would recommend everyone to give it a shot. Better late than never.
Fantastic book for kids...Gifted it to my 9 year old niece who loves the Wimpy kid series..This book changed her idea of being a wimpy kid to a warrior kid which is the real life fighter kid attitude...She sees me as Uncle Jack :D
All of the wisdom of Jocko Podcast has been distilled down into this book. I have been working out, eating right because of the discipline mindset Jocko talks about. It is one of the best investments that you can have in yourself. Recommended reading for every human.