You will no longer recognize the many vast improvements in the quality of your physical, social and economic well being which accompanied smoking cessation. Maybe it is under an insignificant social circumstance, or maybe a major life crisis. Either way, all the elements seem to be in place. Motive, cause and opportunity are present, reasoning and knowledge of addiction are conspicuously absent. A puff is taken.
New rules are now in place.
Your body demands nicotine. A preordained process is now set in motion, and, even if you don't realize what has happened, a drug relapse has occurred. The wants and desire to take back the action are overpowered by the body's demand for nicotine. You will have no control of the physiological process set in action. Soon your mind bows to your body's dictates.