“He who closes his ears to the views of others shows little confidence in the integrity of his own views.”
If you aren’t willing to listen to, and learn from others, then by default you are saying that your ideas are better, your thoughts are better, and that you are always right. That’s a pretty big gamble if you ask me.
I assume that others might know more, have a different perspective, or offer something that I haven’t considered. There is a great advantage in seeking input from others but only if you surrender your ego and truly listen to learn.