Chapter 7 mapped key determinants of happiness across persons and contexts. This chapter shifts from determinants to change: how people can become happier in realistic, evidence-based ways. It begins by clarifying why a “pathway” cannot be a single universal script, since what people mean by happiness and how they pursue it can vary across the life course and across individuals. The chapter then introduces practical frameworks for locating leverage: models that separate stable influences, circumstances, and voluntary choices; models that treat happiness as a capacity built through investments in material, social, and personal resources; and models that emphasize health, hope, and harmony as intersecting drivers. It synthesizes evidence on intentional activity change, person-activity fit, and the role of mediators such as positive emotions, thoughts, and behaviors. It also summarizes what preregistered research suggests about commonly recommended strategies and why replication reforms matter for practice. Finally, the chapter addresses two recurring pitfalls in applied happiness work: overvaluing happiness as a goal and ignoring context, including place-based conditions that shape daily life. The result is a flexible pathway: define your target, identify constraints, choose feasible levers, test and adapt, and build psychological balance over time.