When you eventually make the decision to quit smoking, it's ALWAYS going to be in your own best interest to enlist some help. Take advantage of the many free services offered by your local quit team (1-800-QUIT-NOW) and your neighborhood pharmacist.
Make sure to also discuss it with your personal physician before you attempt to quit. Your ability to successfully quit smoking improves when evidence-based anti-smoking medications are incorporated.
Become familiar with what's involved in a quit attempt and what's to be expected when you've decided to beat your nicotine addiction. Learn as much as you can about the process beforehand.
And remember the ancient Chinese proverb, a journey of 1000 miles begins with the first step.
Here's an excellent video created by Mike Evans, MD explaining the mechanics of a quit attempt -
HT: Manchester Stop Smoking Service