This document discusses the components of happiness according to noted psychologist Martin Seligman. It states that happiness is comprised of 50% genetics/DNA, 10% life circumstances, and 40% voluntary activities and choices. Seligman identified three types of happy life: 1) Pleasant life defined by a happiness formula, 2) Engaged life defined by being absorbed in activities, and 3) Meaningful life defined by serving something bigger than oneself. The document concludes with suggestions for maintaining happiness such as gratitude, spending time with a partner, and helping others.