In this "powerful personal story woven with a rich analysis of what we all seek" (Sergey Brin, cofounder of Google), Mo Gawdat, Chief Business Officer at Google's X], applies his superior logic and problem solving skills to understand how the brain processes joy and sadness--and then he solves for happy.

In 2001 Mo Gawdat realized that despite his incredible success, he was desperately unhappy. A lifelong learner, he attacked the problem as an engineer would: examining all the provable facts and scrupulously applying logic. Eventually, his countless hours of research and science proved...