“I was wrong” is the most expensive sentence for your ego and the cheapest for your growth.

Those three words cost something in the moment and almost nothing afterwards. Defending a position you no longer believe is the expensive option: you spend energy maintaining it, you stop being able to learn in that direction, and everyone around you can usually tell. Admitting it ends all of that in about two seconds. The price is a brief flush of embarrassment and the return is everything you can now consider.

Say it once this week, plainly and without a long explanation attached. Try it in a small argument rather than a serious one. Watch how fast people stop being combative when you concede something real.