I smoked for about 30 years, very heavily until my best friend died of cancer (smoking related) 6 years ago. After seeing him dying, very slowly and painfully, I knew I had to quit.
It was not very easy and after 6 months, trying everything, to no avail, someone advised me to use Zyban. I got the prescription, and halfway through the first 30 tablets, I was off cigarettes! It is now five-and- a-half years and i never looked back or had any craving!