I think it’s a healthy thing to do to admit when your wrong as it places importance on truth rather than self image.
Some examples:
I thought pay-per-view was paper-view because you had to fill out a form to watch it.
This morning I insisted there was a noise outside to my partner and it was in fact the refrigerant in the fridge gurgling.
I thought the cat wanted to be pet— it did not.
My argument against capital punishment is that no legal system is foolproof and some number of innocent people are going to get locked up no matter what. That is aready unacceptable in itself but the idea of sentencing someone to death who hasn’t done anything wrong is the greatest injustice I can think of.
There’s even a saying about it. “I would rather a thousand guilty men go free than one innocent man be murdered”.
Sure, I’m just saying falling short of perfection is not the argument that swayed me. It took me time to get there.