Check out the "Smoke-Free" Paraliminal tape, which has one of the highest levels of satisfaction of all the Paraliminal tapes.
It is particularly effective if you smoke a pack and a half or less a day, have been smoking less than 20 years, and have successfully quit in the past, even if it was only for one day.
If you fit into the above, then listen to side A daily until you are ready to go "cold turkey," in which case you would start listening to side B for a week or two for reinforcement.
If you don't fit into the above, listen to side A daily while you cut back. Then take a break away from the tape for a week to 3 weeks. And then, follow the instructions above.
Keep the tape on hand, in case some future situation brings back that urge to smoke. Listen to one side one time, and you'll find yourself right back on track.