"Why do some people succeed and others fail? Sharing new insights from her landmark research on grit, MacArthur genius grant recipient Angela Duckworth explains why talent is hardly a guarantor of success. Rather, other factors can be even more crucial, such as identifying our passions and following through on our commitments. Drawing on her own story as the daughter of a scientist who frequently bemoaned her lack of smarts, Duckworth describes her winding path through teaching, business consulting, and neuroscience, which led to the hypothesis that what really drives success is not "genius" but a special blend of passion and long-term perseverance.