On creative endeavours.

I am a creative person. I have abilities in many different artistic venues. Do I use these abilities to my advantage? No. Instead I let my insecurities and anxieties and godawful self conscious ways get in the way of expressing myself. If I could just lose these roadblocks and let my art leak out unfettered, I KNOW I could be good at whichever way I chose to do so. So how does one go about doing this, letting go of one's inhibitions and letting their art pour out where it had once been dammed?