The post takes its title from the book I have just finished reading and which I intend to summarise so that you can either enjoy the synopsis and be inspired to read it for yourself, or simply take away my interpretation of the lessons presented therein. [caveat: I initially started reading this book about three years ago and got most of the way through it, but admittedly found some of the chapters repeating the same ideas, which made me put the book back on the shelf and only pick it up recently to finish it, for my personal satisfaction of completeness.] I have decided to use the concluding chapter as a guide to comment on the ideas presented in the book with subheadings as in the original text, which I quote from liberally.