What is wrong with me?

You should definitely take a step back and reflect on what you want to do in your personal life. Your professional life appears to have worked out for itself. You should reflect on personal life and realize what it is you want in a mate (try writing it down if it all seems too much). Don't let your minor romantic & dating failures set you back, everyone gets the chance to love again. Once you land that romantic relationship take it day by day and give it 100% of yourself. As long as your happy with yourself that is all that matters. If I were you I'd take a vacation, then come back refreshed and think about everything you say and do before you say and do it. Trust me nothing is wrong with you at all, we all face common issues we have to overcome. Always reflect and do what works for you!!!!