To fix a machine, first you need to find out what's wrong with it.

To fix unhappiness, you need to find out what causes it. This book provides readers with exercises to help reshape their mental processes. Drawing on his expertise in programming and his knowledge of neuroscience, Mo explains how - despite their incredible complexity - our brains behave in ways that are largely predictable.

From these insights, he delivers this user manual for happiness. Inspired by the life of his late son, Ali, Mo Gawdat has set out to share a model for happiness based on generosity and empathy towards ourselves and others. Using his experience as a former Google engineer and Chief Business Officer, Mo shares his 'code' for reprogramming our brain and moving away from the misconceptions modern life gives us.