Just to add a negative note, I think you only get hurt by criticism when you already have some sort of insecurity about it yourself.
For example, if someone said to me "you're fat" I'd just laugh cos I know I'm not.
But one time my uncle's wife said "you're condescending like your mother" and to this day it haunts me because I wonder if it's true, about what made her say it (because it was totally out of the blue) and also because it's about my lovely mum.
Do you have some sort of insecurity about your job? Do you feel that people look down on it?