How can we live well? To answer this question, psychology must acknowledge and integrate its descriptive and prescriptive components. One of psychology s strengths has been its willingness to embrace different purposes, perspectives, and approaches, and this recommendation is in the spirit of the field s history. At present, psychology knows more about people s problems and how to solve them than it does about what it means to live well and how to encourage and maintain such a life. Moreover, what is known is often fragmented because of psychology s specialization. Our article calls for further discussion in psychological terms of what it means to live well; the study of actual people and how they behave; multivariate, multimethod, and longitudinal research; more sophisticated interventions; interdisciplinary collaboration; and translational research.