What is true for grit is true for optimism. Optimism gets you to stick to things that are worthwhile. But optimism also gets you to stick to things t… - Annie Duke

In general, when we quit, we fear two things: that we've failed and that we've wasted our time, effort, or money. Waste is a forward-looking problem, not a backward-looking one.

When the outcome turns out poorly, it's easy to focus on the details that suggest the decision process was poor. We think we are seeing the decision quality rationally because the bad process is obvious.

A lot of experience can be an excellent teacher. A single experience, not so much. Looking across a large enough set of decisions and outcomes, we can start to tease out the lessons experience might offer us. Looking at just one outcome, we get resulting and hindsight bias.