<p>This is because the habit is really addictive. Those who have tried to quit before find it irritable when they dont have a cigarette to puff. This is because of the nicotine in the cigarette. Smoking is not just a habit but and addiction. Nicotine withdrawal is what causing the and irritability when unable to have a smoke. Nicotine instantly goes to the brain when smoking. While the nicotine is filling the brain it sends out a chemical dopamine giving a feeling of enjoyment and tranquility. This feeling is irresistible to the body. When the dopamine level drops this is the start of nicotine withdrawal that will make you get terrible-tempered. The nicotine makes your body to crave for more of it and will make you to keep smoking. Each time you smoke cigarette it becomes lesser effective so the brain would tell you to smoke more to regain the relaxing feeling. But the result of the excessive inhaled toxins will give you smoking connected sickness.When you want to smoke you will feel certain bodily nicotine withdrawal indications such as dizziness, insomnia, restlessness, headache, coughing, dry throat, slower heart rate and constipation. Smoking has become a routine for many people. Other people, environment, emotions, occasions can trigger a smoker to smoke. To some people they are triggered to smoke when they drink coffee, wine or beer, or after having lunch or dinner. You are also triggered to smoke when around with smokers, waiting for transportation, or after being involved in an argument or when feeling nervous or stressed. Smoking routines makes instructions to the brain telling that you should smoke when you are not supposed to.If you tell yourself that it is time to quit smoking, be ready to say so long to those sticks and packs of cigars. You must have a commitment to yourself. List down the things that will make you quit smoking. If you are health conscious do this for yourself your family or your children. Making a quitting plot is a fantastic way to quitting successfully. Be sure to point out how to stay out from smoking triggers.