I quit smoking and dipping without help. I smoked for 12 years and dipped for about 6. One day I just woke up looked at my self in the mirror and said, "What a fucking piece of shit you are!" I used to have to get up in the morning and run to the store to buy smokes before I could do anything else. I finally came to the realization that inside my head was a mind, and that it belonged to me - not some chemical. I made a commitment to myself that if I couldn't beat a nicotine addiction, that I was a complete waste of life - a total piece of shit not worth pissing on.
Once you break it down to the elemental level and really do some soul searching you will have a solid foundation to stop. It disgusts me so much now that if I ever went back to smoking or dipping - i'd just shoot myself in the head. After all if your mind is not strong enough to beat nicotine, does your mind really deserve to live? Anybody who really wants to quit smoking can shoot me an email and I will give them some tips that worked for me.
Getting through the first week or two is the hard part.