Abstract
In this reply to Blanchflower and Graham (2021), we address key points in their response to our article, which challenged the robustness of the U shape in different contexts and aimed to move scholarship on life-course happiness beyond a focus on a single cross-sectional curve. We attend to apparent misconceptions in their portrayal of our arguments, identify points of agreement, and emphasize the value of exploring diversity rather than searching for homogeneity in patterns of change in well-being across life. Future longitudinal research to uncover the complex processes that characterize and underlie human happiness will lead to greater understanding that can benefit individuals and societies.