I have this issue too. As a youth I had a stutter and insecurity issues, which fell away when I realized my intellect was going to get me the hell away from the hick state I found myself. Through bravado and incredible luck, I managed to get a Harvard education - but while there nearly every single one of these insecurity issues cited in the article had a variation in my experience while attending Harvard. And after Harvard, I am barely and not really a member of the Harvard Network, primarily due to insecurity back then and being afraid to expose myself as not really being a Harvard Guy but some imposter hick.