Sonja Lyubomirsky is a professor of psychology at UC Riverside and author of The How of Happiness, which outlines strategies backed by research for increasing happiness. The book suggests that 40% of happiness is subject to self-control, targeting behaviors like gratitude, kindness, and savoring good experiences. The document provides links to the AmAreWay website for more information on happiness and free eBooks on related topics. It encourages feedback to improve content and share experiences.