Hey man.
How can you be sure that you dont mind rejection if you have not made any approach?
To be honest, in my eyes you are more scared of rejection that you will admit to yourself.
You know there is only one solution to this. No book, no audio nor any guru can help you here but yourself. You need to approach. Open your mouth and start talking. perhaps not only to sexy women, but to everybody. Just random opening with the sole purpose of opening and getting that anxiety under control, would be a great start. But people can tell you thousands of tricks and tips and whatever, but in the end IT IS YOU WHO NEEDS TO PERFORM THEM.
That is one area where we cant help you in.
Just to give you an idea, this is the url of series of posts made by a guy here on the board. Read it. I dont know how to link on this board, so i ll just give the plain url:
just-started-approaching-no-dice-what-a ... 38790.html
this is what you should be doing.
good luck!