Hey, good luck with the decision to quit!
I know what it's like, I'm in the process of quitting chewing tobacco now. I've been tobacco free for 23 days so far. I've tried many times in the past, but this time I'm not going back to tobacco.
My advice-get a group of friends for support. Avoid activities that make you want to smoke, along with identifying them, so you can avoid/prepare for them.
You'll be amazed how much better you feel after a few days. It's really unbelievable. The first few days are the hardest, but after you get past that, you will feel so much better and remember why you are quitting.
Good luck!