Best thing my daddy taught me; no matter how confident you are, you could always be wrong. Brains are just unreliable sometimes. Sky is blue? Could be wrong. You’re N years old? Probably… but you could be wrong.
Accepting this allows one to improve. Best we can do is recognize this, and try our best to minimize how often we’re wrong.
This has allowed me to withhold confidence in many situations. Not in deference, but in thoughtful acceptance that I truly might be wrong.