Quit cold turkey on Oct 12 2014 after smoking a pack a day for 15 years. Haven't had one single cravings after the first month...That was my 6th attempt and my most successful (so far). I don't think I will ever smoke again and whenever I think of one, I roll up my favorite herbal smoke.
What really worked for me is:
-Will power/Attitude: Once you understand the psychological dependency and how strong it is, I challenged myself to beat it. Cig companies have spent millions in order to enhance the dependency factor...What you call a filter, is nothing more than a tube that delivers a specific dose to your brain.
-Welbutrin: Helped the first 2 weeks.
-Really Cold water: when cravings come in. (raises your adrenaline, which curbs cravings).
-Snackage: I snacked like crazy and gained like 5 pounds...(losing them now).
Nicotine will play games on you...One more puff, one more cig, just one more and I am done...Don't give in and be mad at yourself for smoking all that crap...