 Philosophers have always been interested in what makes a human life go well, but recent decades have seen a dramatic increase in both psychological and philosophical research into happiness, well-being, and what makes for a good life. It is important to distinguish here between ‘good life’ in the sense of a life that goes well for the one who lives it, and a morally good life, since philosophers have long debated whether a morally bad person could enjoy a good life. The empirical study of wellbeing focuses primarily on lives that are good in the former sense: good for the person whose life it is. Second, we need to distinguish between a hedonically good life and an overall good life. A life that is hedonically good is one that the subject experiences as pleasant; an overall good life might not contain much pleasure but might be good for other reasons, such as what it accomplishes. We might decide, after investigation, that an overall good life must be a hedonically good life, but the two concepts are distinct.