I have serval thoughts on this but not enough time and i'm tired as hell right now but I will say this and then come back for more later... we all innately have cognitive biases such as confirmation biases, which could be construed as being pride or ego because we filter information based on our preconceptions. If it confirms our original viewpoint then we usually accept it more willingly. If it doesn't then we usually discard it or fine fault in it for some reason. We create a bubble that is hard to burst, and change only comes when you break through the biases and can no longer justify holding a belief. I find that this takes either lots of time and a willingness for learning the truth or a preponderance of evidence to the contrary that is irreconcilable to the original viewpoint. How open one is to admitting ones viewpoint is wrong maybe where pride and ego comes in. I know i have not admitted I was wrong in arguments in the past, even though I knew I was wrong, and its was usually because i was angry at the other person or some other petty reason. I would eventually accept I was wrong and change my viewpoint tho, but only after I had calmed down and no longer emotional.