Embracing uncertainty.
Uncertainty is a difficult pill to swallow. For the hunter-gatherers, uncertainty mostly meant a potential lethal attack by a predator. Over time, this fear has evolved into a desire to seek certainty everywhere.
What this leads to is that we make assertions and if they are wrong we are afraid to look at them and learn. We are unable to separate our decisions from their outcomes. We are unable to say "I don't know" and then choose to act from there.
When we embrace uncertainty, we start looking things the way they are and that allows us to make better decisions.
HT to Annie Duke for her wonderful book "Thinking in Bets" on decision making.