When people result, they look at whether the result was good or bad to figure out if the decision was good or bad. - Annie Duke

When you are weighing whether to quit something or stick with it, you can't know for sure whether you can succeed at what you're doing because that's probabilistic. But there is a crucial difference between the two choices. Only one choice — the choice to persevere — lets you eventually find out the answer.

The lesson here is that we shouldn't wait to be forced to find a Plan B. We should always be doing some exploration, especially because sometimes Plan B can turn out to be better than the thing you're already pursuing.

Quit and grit are two sides of the exact same decision. Decision-making in the real world requires action without complete information. Quitting is the tool that allows us to react to new information that is revealed after we make a decision.