What's stopping You?

A very simple question and one I can't find the answer of. I've wrecked my brains trying to figure out one reason, one plausible explanation and till now i have come up with nothing..blank. All the exercises just lead to one conclusion- the one I detest 'cause i know, deep within, that it's true. And the conclusion is nothing . To this day I had managed to run away from the question itself, lest the answer, I had managed to hide my inadequacy behind various veils and then  all of a sudden, all the veils were torn down. My friend asked me this question and the nightmares began. 
I realized ( well actually I already knew), that I am the only one in my way, the only one stopping myself. and because it is true, I hate this realization. the new question is- what am I going to do now ? well, honestly I don't know. I don't know how do I start and where do I start. After all its not easy to fight yourself.