I have the exact same problem. I have periods of uncertainty and self-loathing where I think constantly about my shortcomings, which make me feel like an unworthy human being. I know there are people in the world who have worser flaws, but that doesn't make it any less painful to take! I think it's something that will get better with time and with experience. What we're going through is probably some kind of transitional period, which, when we emerge out the other side, will make us a better and stronger person for it. Well....that's what I hope anyway. :-/