Will power, that's what it ultimately comes down to, sure there are a plethora of crutches out there, but it ultimately comes down to YOU. My wife and I both kicked major cig habits cold turkey - it was a real trip - I had nightmares for a few nights but eventually overcame all those demons, including intense cravings, by adopting the strategy of detached observation, ie. I analyzed and explained what I was going through as if I was the subject of scientific observation. This distanced me from the symptoms I was experiencing - it was not "I" who was going through this shit but this body that I was observing. It's kind of hard to explain but it worked for me and I haven't craved a cigarette for 22 years now even though I do enjoy the occasional cigar.
Good luck, it's a bitch, but you will eventually reach the point where you say "boy am I ever glad that I quit smoking."