Its a really important hump to get over. When I got out of my undergrad I felt like I owned the world, but a few years later and I felt like I knew nothing.

It just made me try harder, but I think every kid needs to get over that bridge to become a legitimate adult - to be faced with both success and failure, and realize you are only ever at local maxima, there is always another mountain to climb, and you do it to aspire to see more and further.