Mike Cernovich explains why it's important, as well as how to do it:
Don’t take being wrong personally.The first one is the most important. You are not the sum of your ideas. You can't own an idea either. We are all wrong on a regular basis. Bad ideas are, by definition false, and anyone who values the truth should not hesitate to reject them.
If your ideas are not yours, why care if those ideas are attacked? You are you. The ideas you choose to hold dear are how you live your life. Better ideas means a better life. Bad ideas are like a spare tire around your waist. Do you take it personally when you lose fat? You have lost part of yourself, haven’t you? Yet you rejoice. Adopt the same mindset when losing bad ideas.
Remind yourself that bad ideas ruin lives.
I saw too many friends go into bankruptcy after the housing bubble burst. I avoided that fate because I never purchased a home, though other bad ideas have cost me dearly.
Ask how much money you would bet on your ideas.
If your ideas are true and good, surely you’ll wager on them?
Do you know how many people cowered away from election bets? Everyone knew who would win the election, and few would put their money where their mouths were.
If you wouldn’t bet on an idea you hold on the world, then do you believe the idea to be true?
Embrace uncertainty as an opportunity for growth.
What is the element of every horror film? Suspense. Uncertainty. We cling onto certain beliefs, even when those beliefs are wrong, because in a state of nature surprise usually meant some form of attack from wolverines, tsunamis, and blizzards.
Hold true to ideas about gravity, as they will keep you alive. Remain fluid on ideas about the nature of the human condition, as other people have lives of their owns and those lives are influenced by an ever-changing zeitgeist.
Recognizing you are wrong today gives you an opportunity to be right tomorrow.