Sorry for repeating what had been said in my post, I didn't read Bronco's post before I put mine up this morning.

Another trick that a buddy of mine swears by is to have someone else pull the trigger on his release. Doesn't work for back tension, naturally, but if you draw, hold on target, and have someone else pull the trigger, it helps you get over your target panic. You really gotta focus on technique, and get comfortable with 100% surprise break... But it REALLY messes with some people's heads when you try it the first time...