And “winning” here need not come at the expense of others. The project of life can be about collaboration or self-sacrifice, rather than about competition. “Your values” here means anything you care about, including other people. It isn’t restricted to selfish values or unshared values.
I want to believe as many true things and as few false things as possible. To ensure my beliefs accurately map to reality, I need a strategy to eliminate the errors the "Thinking Fast" part of our brain often introduces--to filter out my cognitive biases. Mastering that filtering process leads to thinking in ways that let me win more often. But that need not lead to selfishness. When working to examine and reject our own bias, we can target developing thought processes that help us help others as well as making us better at achieving personal success.