Positive psychology has grown rapidly in popularity but some question if applications are outpacing the underlying research. While positive psychology has focused research on well-being and human flourishing, critics argue that some claims about optimism and happiness influencing health outcomes overstate the evidence. Proponents counter that research generally supports benefits but more work is still needed to account for individual differences and ensure one approach does not fit all. As the field continues to develop, balancing enthusiasm with scientific rigor will help maximize benefits and address limitations.