Quit

The central lesson of Quit is that knowing when to stop is just as important as knowing when to continue. Success is not about relentless persistence—it’s about making better decisions over time. Because the world is unpredictable, the ability to reassess and change direction is essential. Quitting, when done thoughtfully, is not giving up—it is optimizing your path based on new information and better opportunities.

Rather than fearing quitting, you should see it as a strategic tool. By setting clear exit criteria, recognizing cognitive biases, and maintaining alternative options, you can make more rational choices. The most successful people are not those who never quit—they are the ones who quit the right things at the right time, allowing them to focus their energy where it matters most.

Annie Duke is a former professional poker player turned decision-making expert. She is widely recognized for her work on improving judgment under uncertainty, drawing on insights from psychology, economics, and game theory. Duke has used her experience in high-stakes poker—where decisions must be made with incomplete information—to teach individuals and organizations how to think more clearly and make better choices. Her work focuses on separating decision quality from outcomes and helping people navigate complex, uncertain environments more effectively.