I think Stanislov Grof et al do some rebirthing stuff with holotropic breathing.
http://www.holotropic.com/ In my experience, there are so many things that can have an influence on these kinds of issues. In my experience, the best ones have come from life itself and have not been planned. I think the intention makes you ready, and you spend a long time preparing.... but the real stuff happens as an accident.
Some things can help make you "accident prone" as the saying goes.
What may strike you as strange is that your birth experience may have nothing to do, in all actuality, with the problems you describe. This stuff is pretty weird as far as that goes, I think.
When you make progress and find out what it was, you feel like you knew it all along. I wonder, though, did you? Or is hindsight twenty-twenty?
Good luck with your endeavor. May you find the freedom you seek.
