"Never cheat!" my colleague said; on year 2000, he quited smoking three times, the longest one lasted 6 months; I quited five times, using his words, I am still a smoker.
However, I am happy with my stage now - I didn't force myself not to smoke, but I've quited the habbit, and I am no longer fighting with this evil need.
take it easy, man! I hope your dream will be gone with the wind soon.