Gum, water, seeds, deep breathing, get some excercise, take a walk, fake dip....whatever it takes. Post up, read the site and get involved.
Get on chat, read posts from Greg, MikeA, RT, TCOPE, read the site. Drink a ton of water. Take tons of vitamins, especially Vitamin B, since that will regulate your neurological system, which is about to take a giant shit on you.
Get involved with these doucheba...I mean, gentlemen...they will support you through thick and thin.
Take NOLAQs advice, come here and rant and rave and rage...we've done it, and got the t-shirt.
This will be the best decision you've ever made...can you make it?