Confidence and positioning yourself in life to know that you have absolutely nothing to hide/be ashamed of. Forget all the crap about social status/money/whatever...it's a simple yes or no question to yourself: "If I go over to that girl and introduce myself, will she be better off because I did so?" If you answer that with an emphatic yes, than you're high value.
I have a career, cool vehicles, a neat house, fun hobbies, know some people, etc...but screw that. I'm better than all the losers out there not because of that; it's more about the fact that I know I'm a damned good person with a conscience and without any baggage at all. That's what high value is, it's the ability to think and act freely because you literally know that you're completely worth it for somebody to have in their life. Having nothing to hide and the matching awareness/pride in yourself as a person to go with it = being high value.