Decades of research have shown that biological and psychosocial aging are not as predetermined as had been thought for a long time. Yet, despite a large and growing evidence base, most individuals still hold negative views of aging that keep them from optimizing their chances for healthy and productive aging. Given this general background, this article has three major objectives: (a) to show that the 3 big misconceptions at the heart of the public's negative views of aging can be refuted based on scientific evidence; (b) to illustrate that changing individuals' views of aging calls for the development of a new narrative on aging, one that incorporates the increasing diversity of the aging population; and (c) to discuss how psychologists can contribute to creating this new narrative on aging. We argue that growing old(er) in the United States is not the same old business anymore and that psychologists are uniquely positioned to contribute to the social and cultural transformation that population aging and increasing diversity in the U.S. society require. (PsycInfo Database Record (c) 2020 APA, all rights reserved).