I just lurking around try to find a cure for self esteem.
I find your posting interesting, i try to write something as no one did answer you by now.
You did not really write a question. You said you want to reinvent yourself. To do this you would need to leave your old identity behind and take an other one without falling back.
On the other hand you made your experiences you grow into what you are now. The experiences made you feel the way you feel now. To feel different you need to change the experience or make new.
One way to do this might be to go back in your mind to the experience that made you that way and try to imagine it new. This could reprogram your feelings (feeling work not the same way as mind does).
You said you feel distance to everyone. Do you want to connect to them or do you want to feel distance?
Always remember one thing:
There are many special and precious people outside who feel like they are no one or who never think good about themselves. This is never the reality, we cannot see what part of the big puzzle we really are. This "no one" is only about the way we feel in comparison with others but its only a role in society. What makes the social life not easier but it helps a bit.