The 10 rules to stop smoking

Set a stop date and stick to it.
After stopping, absolutely avoid taking a cigarette, even a single puff: the risk of relapse is too important.
Get rid of all cigarettes, lighters and ashtrays.
Write the list of the inconveniences of tobacco and the benefits of the judgment.
Use nicotine substitutes, Zyban or Champix. These products reduce the symptoms of withdrawal (irritability, nervousness, anxiety, depression, problems of concentration, sleep disorders, increased appetite, weight gain, irresistible urge to smoke) and doubles your chances of success.
Ask others not to smoke in your presence. The first few weeks, avoid places where you smoke. However, if you can not or do not want to avoid these places, then decline politely but firmly any offer of cigarette. Be proud to stop smoking!
Warn those around you that you have quit smoking. Get support
Change your routine to avoid places and situations where you used to smoke: eg leave the table as soon as the meal is over.
Use diversion activities to deal with the urgent need for smoking (eg, walking around, drinking water, chewing gum, washing your hands). The desire to smoke increases gradually, reaches a "peak" and regresses spontaneously. The strong desire to smoke does not last more than 5 minutes. The more time passes, the more these cravings diminish in number and intensity, until complete disappearance.
Tell yourself that getting used to living without tobacco can take time and often requires several attempts.