I know this may sound a touch strange....but when I was quitting and really wanted a cigarette, I would put my fingers to my mouth like I had a cigarette in them and draw air into my lungs, slowly, fill them up and release the air slowly. I would do this until the cravings stopped. I don't know why, but it worked.

The horrible cravings will pass, just give it some time. If I could do it, so can you.