"...nepotism & schooling." Simon
Was never that. It was/is "If your face fits" ..fitting in, a winner, word is your bond, cool, calm, always reliable, keeping you gob shut, etc .. all simple stuff which most can't manage. You don't need public schooling but ok sure if you've got it, it does not get in the way. No public schooling.. then you just need to be perceptive on the 'fitting in' requirement and be who you need to be/want to be.. its not rocket science.
Rejection is part of everything; get over; get past it; you'll get less of it as you go along but it can always come along and smack you in the mug. But, but, but it would a very poor existence without challenges, thats for sure.
Bottom line: your perceived performance and success. Go to it!