Martin Seligman is a renowned American psychologist and the “father of positive psychology,” widely recognized for his groundbreaking work on learned helplessness, optimism, and resilience. As the Zellerbach Family Professor of Psychology at the University of Pennsylvania and a former President of the American Psychological Association, he has authored over 30 books and 350 articles. His research on human flourishing and the PERMA model makes him a preeminent authority on mental toughness and well-being.