I hate speaking so bluntly but the topic CANNOT be written as a summary, like a "dos and donts" list or like a high school project report as they have done with Ikigai. I bought this book with great expectation but had to force myself to finish it. Their style chosen was wrong, the book lacked focus and the writing was basic.
Although I did like the points raised by the book which I found to be quite useful.
A better vision and writing would have made this a far better read.