I love old sayings..."Nothing is bad, or good; thinking makes them so." ShakespereAn old eastern saying, "Your opinion of me is none of my business."
Ask yourself, Why do I give this person the power to make me uncomfortable? Sure, I know that logic has a tough time when it is up against instinct, but, it's the first step toward overcoming that fear. It helps you to create a mindset that will make that detractor powerless. It really is all in our minds you know!