In The How of Happiness, Lyubomirsky explores the idea that individuals have the capacity to take control of their own happiness. Namely, she argues that happiness is not solely determined by external circumstances. Accordingly, one of the book’s central themes is Personal Agency in Happiness.

Lyubomirsky emphasizes personal agency in large part by introducing the concept of the “happiness set point.” This idea suggests that each person has a baseline level of happiness. That baseline is determined by not only genetics and temperament but also intentional activities and choices. By acknowledging the existence of a set point, Lyubomirsky encourages readers to recognize that their current level of happiness is not fixed. Rather, everyone has the capacity to raise that level through deliberate efforts.

An example of personal agency in action is illustrated in Chapter 1, where Lyubomirsky discusses the power of intentional activities. She presents research findings showing that individuals who engage in activities specifically designed to increase their happiness experience significant boosts in well-being. By highlighting these Evidence-Based Strategies for Well-Being, Lyubomirsky underscores the idea that individuals can actively choose to incorporate happiness-enhancing activities into their lives, thereby exerting control over their emotional well-being.

Furthermore, Lyubomirsky addresses the theme of personal agency in happiness by emphasizing the role of goal pursuit in happiness.