Stay with it

Yep - Zyban is great but it is only sheer determination and persistence which helps us break the habit. Keep at it - it definitely gets easier. I wouldn't pretend that it is all plain sailing after five months but it is so very much easier that I only ever think of a cigarette about once a day now (usually just when I am about to chill out with a drink). It really is worth busting through those cravings (the 'habit' cravings are much worse than the physical ones).

Good luck.