I do not do well in corporate settings; I know this from the entry level jobs I've had. I'm small and suck at sports-right there, I'm screwed. How do you move up in an alpha culture like that?
Get some social development courses. Real Social Dynamics (RSD) is a good one. The main guy calls himself Tyler Durden (after Fight Club). It's less about picking up girls than the rest of them and more about personal growth, but from the perspective of someone who has actually turned his life around and not just some feel-good guru. Then go out and practice. You don't get good at being social by staying home.