Good Luck!
There is a lot of great ideas in this thread.
One can not quit unless they want too. Only you can do this, whether you do it cold turkey or with the use of drugs(be careful of side effects). For the most part, failing will happen but each time you quit you get closer to your goal for quitting forever. It really is all mental and working through how to deal with the cravings
It will not be easy, in fact it will be one of the hardest things you will ever do. For some, years after quitting, they still get the craving.
For me, I never told myself that I was going to quit, I told myself that I was never buying another pack of smokes. Never did either in the past 12 years.
Change your habits of when you chewed. Find another fix,(gum, suckers, mints, toothpicks, exercise, walks) but only use that fix when your cravings are really bad. Just try and tell yourself that you do not need it for the lower craving times.
Save your money that you would have used on nicotine. Reward yourself for quitting when you have saved enough. When I saved enough I bought a topend St Croix Rod. Every time that I use it now I smile. After that, I would reward myself for milestones that I set for not smoking, family trip to Zion(1 year),new electronics for the boat(5 year), motorcycle(10 year). I tried to make my rewards something valuable to me so that I could remember and enjoy the success of quitting.
Posting here will help talk through your process. If you need help getting through this, just ask. Many of us have done it and are willing to help.
Ron