If you are trying to quit smoking all together then you need to commit and stop carrying your cigarettes around with you. If you do not have cigarettes with you then you make it less convenient to smoke. This will make it easier for you to quit in the long run.

Throw or give away all of your cigarettes or other tobacco products. If you don't have easy access to tobacco, you won't be tempted to have one last cigarette or to return to smoking when you feel stressed. In addition, if you decide to smoke, you'll have to put extra effort into getting tobacco and might change your mind by the time you can get it.