Are these successful agers? A question arises about how we may define successful aging. Traditional objective definitions have emphasized absence of physical and cognitive disabilities. New data suggest that for most senior citizens, subjective quality of life is more important than these objective measures, and it is predicted less by physical health and more by psychosocial protective factors such as resilience, optimism, and mental/emotional status. Whereas physical health and some aspects of cognitive function (such as working memory and psychomotor speed) decline, mental and psychosocial functioning tend to improve with aging. This paradoxical increase in self-rated quality of life in older adults may be due, in part, to the wisdom of aging—that is, age-associated wisdom may help to overcome the negative effects of physical disabilities and social stressors that are common in late life and lead to improved mental health and psychosocial functioning. The decades of experience that an older individual has gathered may lead to wisdom, emotional equanimity, rational decision making, and mature creativity.