If someone praises my writing or a talk, it is nice to hear, but i don't learn anything. If someone intelligently criticises or disagrees with me, I learn. If they convince me that I am wrong, I am thankful: then I change my beliefs, writings and talks. If I still beleive that I was correct, the disagreement reveals that I expressed myself badly: I need to rethink and rephrase my argument.
(If anyone proves me wrong, I would prefer it to be me.