Life is tough. There is no denying that. I believe however we are still able to live a life of joy and happiness and it isn't as hard as winning 20 million dollars in the lotto or moving to an island in Greece and shutting off from the rest of the world. It can happen with no tools, no money and no resources. It can happen now and it starts with you. 

I will summarise these eight predictors of joy based on the book and my interpretations.