I just finished reading this book. I bought it as soon as it came out but have only recently got round to reading it. I finished it in 3 sittings. It is very tough to put down. I am an avid Warrior Diet fan and love the way Ori thinks and writes.
My advice to everyone would be to first read, re-read and implement the Warrior Diet. Then, treat The 7 Principles of Stress as a sequel, as this allows for some good context when reading the latter book.
There are a great many take home messages in The 7 Principles of Stress. I will no doubt re-read the book, though one message which resonated greatly with me is that while things like anxiety and depression have many complex causes, they can all be simplified down to chronic stress and lack of reward.
Stress is good. We need an adequate amount of it to thrive and be happy, with challenges to overcome, as the triumph over these challenges brings with it reward. However, this stress must be intermittent, and not chronic, with a repeated cycle of stress and reward. This cycle increases resilience, whereas chronic stress with no reward grinds you down and beats you into submission.
On the other end of the spectrum, a lack of stress and challenges to overcome causes one to fester and whither away, just as an untrained muscle will become weak and lose shape. This is why those who retire but find nothing with which to occupy their newfound free time are typically not as healthy as those who continue to work, find hobbies, or remain active in their later years.
I am 22 years old, and feel incredibly lucky that someone like Ori Hofmekler has put this work together for someone like me with "youth" on their side to fully implement and take advantage of. Having said that, while I have found that saying "age is just a number" is often dismissed when coming from someone in their early 20s, Ori explains in detail why people should never use age as an excuse for anything. Basically, 'aging' in the sense of becoming frail and weak is more down to an inability to handle stress than it is due to simply reaching a certain birthday.
Anyway, I have rambled enough. This is a fantastic read, and everyone should listen to what Mr. Hofmekler has to say. I truly believe that if more people followed his advice, the world would be a better, healthier and happier place.