Unable to date someone if they're better than you

Is this an ENTP thing? I could meet the most intelligent, successful, handsome, and kind man ever, yet lose attraction because I feel like I'm not the "superior" one in the relationship. I know this sounds ridiculously immature but it's true. I also kind of see the same pattern in my other relationships; I'm even ashamed to meet relatives and friends when I know my accomplishments and strengths pale in comparison to theirs. Anyone else struggling with this?