This document discusses the concept of a growth or "agile" mindset versus a fixed mindset. It describes several experiments that show students with a growth mindset are more likely to embrace challenges, see effort as the path to mastery, and improve with practice, while those with a fixed mindset avoid challenges and see effort as something for the less intelligent. It argues that mindsets can be changed and provides suggestions for developing an agile mindset in children, students, employees and oneself by focusing on learning and growth over innate ability.