Overview
Psychologist Angela Duckworth shows that the secret to outstanding achievement is not talent but a combination of passion and persistence she calls grit. Drawing on research with West Point cadets, spelling bee champions, and business leaders, she demonstrates that grit can be learned.
Duckworth is a University of Pennsylvania psychologist whose early work studied why some West Point cadets completed the punishing Beast Barracks training and others dropped out. Grit, published in 2016, argues that passion and perseverance applied over long periods predict success better than talent. The book has since been criticised by researchers including Marcus Credé, whose meta-analysis found the grit effect is smaller than Duckworth's original work suggested.
Key Ideas
Grit trumps talent
Effort counts twice — talent times effort equals skill, and skill times effort equals achievement.
Passion and perseverance
Grit is about sustained interest and consistent effort over years, not just intensity in the moment.
Deliberate practice
Stretch goals, focused practice, and immediate feedback are how gritty people improve.
Purpose drives grit
Connecting your work to a purpose beyond yourself sustains long-term motivation.
Who should read this
Parents thinking about how to raise children who persist, managers building teams for long hauls, and readers who worry they lack some innate gift others have. The book is encouraging without being saccharine, and Duckworth is unusually willing to include stories about her own blind spots.
Who might skip it
Skip if you want rigorous evidence; the book's central claim has not held up as strongly in replication as its popularity suggests. Skip also if you're sceptical of single-construct psychology — 'grit' may be close enough to conscientiousness that it doesn't add new information, and some researchers argue exactly that.
The verdict
A warm, readable book about a concept that is probably real but smaller than advertised. I take the big message — that sustained effort over years compounds in ways short bursts don't — and leave the specific grit scale and the implication that you can meaningfully train it via a quiz. Useful tone, wobbly evidence.
"Enthusiasm is common. Endurance is rare."
— Angela Duckworth, Grit: The Power of Passion and Perseverance
If you liked this
Read Peak by Ericsson for the deliberate-practice version. For the critique, see Marcus Credé's 'What shall we do about grit?' (2018).