You get healthy by learning healthy habits. You get wealthy by learning valuable skills. You build a great interpersonal life by learning people skil… - Derek Sivers

Success comes from persistently improving and inventing, not from persistently doing what’s not working.

So try to be wrong.
Try to disprove your beliefs.
Never believe something on faith.
Prove it or disprove it.
While other people have one idea that they think might work, you will have thousands you can prove didn’t work, and one you couldn’t make fail.

You really learn only when you’re surprised. If you’re not surprised, then everything is fitting into your existing thought patterns. So to get smarter, you need to get surprised, think in new ways, and deeply understand different perspectives.