Congrats on your decision to quit and I hope your first day has gone well! I actually found that my first day was not near as bad as I expected. I am finishing off my ninth day smoke free and trust me, you can do it. Keep up your positive can do attitude and you can do it. I decided to keep myself real busy by cleaning and cooking for the family to help occupy my time and keep the cravings away and it worked well. It has been nice not having my clothes smelling like an ashtray.
Good luck!