The book debunks the myth that success is the result of talent alone by highlighting the importance of sustained effort. Duckworth describes her experience as a teacher, where students with high aptitude often underperformed compared to those who worked diligently. As one struggling student noted, 'I knew I had to focus on what to do next. So I went to my teacher and asked for help.' This narrative underscores the principle that effort, compounded over time, can lead to outstanding achievements, regardless of one's natural abilities.