Ive never taken boards...nor would I know what to do if my entire life was centered around ONE exam...
BUT...my advice..relax...brush up on some last minute things...buy your FAVORITE ice cream...i usually prefer anything ben and jerrys...maybe that will work for you too...
and then eat it..relax and get a good nights sleep...
and if a prayer is what you need...ill be glad to say one for you..
GOOD LUCK!! Keep us posted