We like to believe things we don’t actually know. It makes us feel better about the fact that we don’t know very much. But admitting that you don’t know is the first step toward actually knowing.

Guard yourself against your own ignorance. Assume that some of your current beliefs will change. Assume you’re wrong about a few things you feel confident about today.

Make decisions with that in mind. Reducing false certainty helps you avoid hidden risks. This kind of humility and flexibility makes more of your decisions age well.