I find meditation to be the best cure when I'm particularly anxious about something. At first I just spend a few minutes trying to completely empty my mind. This can take significant practice if it doesn't come naturally. Then I start into a visualization of the powers of 10 video (yeah, I know it's cheesy but it works!). During that visualization I try to focus on my minute position in the universe, and by the end I'm usually incredibly calm. Whole thing can take less than 10 minutes and I can go from being a wreck to calm.

That's just my routine. Everyone who meditates has their own. It's just kinda whatever works for you. I highly recommend checking out the hundreds or thousands of sites on the interwebs that teach basic/beginner meditation. It's well worth a shot.

Best of luck buddy... getting a grip on your anxiety probably won't be easy, but is absolutely necessary for good mental and physical health.