if you come off as arrogant it probably means you don't push yourself outside of your comfort zone often enough.

i.e. you aren't growing as a human being, you're static, and have become comfortable there in your little niche, so you look down on others who are learning new things.

when was the last time you felt dumb? been a while? fix that. most arrogant people are afraid of feeling dumb so they just dismiss things they aren't good at as beneath them.