Go for Pam Oei's smokins cessation classes!
LOL! True, i think like babyjosef17 says, you* need to find something you love more than the addiction - 'it's either this or that', health/ beauty (whatever you like) or the nice nicotine.
Or, in my relative's case, the health of his family and himself over cigs. Apparently he just stopped in 1 day, just like that.
And to achieve that, you need to put in place some practices to 'avoid temptation'. However i don't think 'avoiding temptation' ala Hickey_ 's suggestions is the way to quit, bcos it doesn't go deeper than that, once temptation presents itself again, you will return to the addiciton.
So yeah, find a motivation to stop smoking. If you value that motivation enough, no matter how awful the road to quitting is, you'll remember what you're doing it for.
And if you need help finding the reasons why you smoke and need to find a motivation to quit (some folks just need help with the reflection process) go look for Pam Oei! Lol.
*'you' being a general term, so you can sort of imagine yourself in the situation