You may be familiar with these classic cognitive biases:...

You may be familiar with these classic cognitive biases:
Illusory superiority bias — This widely held bias is the assumption one is better than average. Doesn’t matter what characteristic it is, you’re better. Obviously, only 50% of all actually are better than average, but no matter.
Confirmation bias — This is a description of our tendency to wind up believing what we want to believe. We may cherry-pick evidence, or we may stop gathering it altogether once we’ve got “proof” that the conclusion we desire has been confirmed.
Endowment effect — We acquire things we like, yes, but we also like the things we’ve acquired. We believe a thing that’s ours has greater value than it really does just because we own it.