Good Decision, Luke. You are embarking on the most difficult and rewarding journey of your life. It doesn't matter that you've been an addict for 2 years or 50...when the nic bitch takes hold, she's hard to shake off.
Use all of the resources available on this site. Get numbers from others in your quit group or their supporters. Go into chat, vent, rage against the machine, anything to keep the turd out of your mouth. You WILL NOT regret the decision to quit. Post roll, be accountable, and reach out for help before the urge becomes unbearable.
I quit with you today, my friend.