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“When you’re most convinced you’re right, you’re most resistant to contradicting evidence.

The opposite is confirmation bias: seeking only evidence that supports what you already believe.”

That’s Shane Parrish, and of course, he’s right.

We all do this. This is a human tendency.

But you can discipline yourself to change: When you’re most convinced you’re right, seek disconfirming evidence.

Seek outside perspective. Let someone who wasn’t committed to your earlier decision review it.

This is one reason outside consultants can be worth the money, at least the ones independent enough to disagree with the person signing their check.

The best and strongest owners and managers I’ve worked with all shared this discipline. I’m sure it wasn’t easy.

But I’m also sure it made them more nimble about admitting mistakes, unloading sunk costs, and succeeding in the longer term.