Welcome to the first day of the rest of your life...the good part. The part without that goddamn monkey on your back. Everybody else has said it right brother. You CAN do this if you want to. It's about willpower. It's about the WANT! You have to really truly WANT to quit...forever...to do this. So reach down, grab your nuts, and get ready for a gut check. It will suck, but we've all been there. We've sucked and you can too. It's much better on the other side...trust me, I just made the journey myself and it's getting better every day.
That being said, drink water, take it really easy on the coffee, chew gum, seeds, fake snuff, whatever you need to do to keep nicotine out of your mouth. Workout. If you don't already workout...then start. It will occupy you for an hour or so, help to flush your system, and help you to sleep easier at night.
Post...post roll every day...first thing when you wake up. Get some of the phone numbers of other guys in your group and text them every day. This will make you accountable to them and them to you and help to keep you all clean.
Glad to see you here brother. PM me and I'll send you my number to text.