In a nutshell: we evolved the feeling of happiness. It’s our reward for satisfying innate needs. If we fail to satisfy those innate needs we feel unhappy. Therefore, let’s identify those innate needs and make sure we’re satisfying them.
The entire book is below. The chapter headings are to the side.
(Dec 2017. If you would prefer this as an ebook, please let me know by emailing
If I get enough interest I will create one.)