Extreme fear of rejection. HELP!!!!

Guys I need your help. I have extreme fear of rejection that I,sometimes, don't even ask for my basic right. I don't have any girlfriend for this very reason. But that does not matter much as I am content in whatever I do. What troubles me is that I am afraid to even ask other bloggers for backlinks. I fear being rejected. I know that I shouldn't be afraid, as most of the bloggers are unknown and I may never come face to face with them.
But yet I cannot help it!!!!