Foremost, this is because most smokers become addicted to the nicotine contained in tobacco products. Nicotine has a deadly addictive power. How? When a person puffs a cigarette, nicotine particles find their way to the lungs through inhalation. From there, nicotine is absorbed into the bloodstream just like the oxygen people breathe. It travels with the blood to the brain where it locks onto certain receptor areas. Dopamine is then released into the brain. This is the chemical that makes the smoker feel a euphoric sensation. Smokers find it difficult to quit because they come to be dependent on this good feeling. And in wanting to experience this repeatedly, this leads to dependence - a sign of addiction.

A person who attempts to quit may experience withdrawal symptoms. Topping the bill of withdrawal symptoms is depression. With the absence of the chemical that produces the relaxing feeling, the brain becomes distressed without it. Other withdrawal symptoms from smoking include:

-Headaches, dizziness, and nausea-Shakes, chills-Cough, dry throat nasal drip-Hunger, fatigue-Constipation, gas or stomach pain-Insomnia, troubled sleep

Not knowing what to do with their hands is another common complaint among ex-smokers while quitting. Once people get hooked, smoking becomes a big part of their lives. They seem to enjoy holding on a stick of cigarette and puffing on them. And after a long period of lighting up, it becomes a routine. As a fact, humans are creatures of habit. By some force of habit, smokers find themselves reaching for a cigarette and lighting it up automatically without thinking about it.

Certain "triggers" in the environment may also hamper a smoker's desire to quit. Things may turn on a smoker's need for a cigarette. These may be feelings, places, and moods. Even the things done routinely may trigger this craving for a smoke.

For those who have been smoking for quite a while already, they may not realize it but they form some emotional attachment to cigarettes. They find the cigarette calming and comforting during those stressful times. Cigarette smoking somehow becomes an extension of their social life, particularly when they are emotionally at the highest or lowest. Giving the smoker a feeling that giving up smoking would seem like giving up a trusted friend.

These are only some of the major reasons why it is hard to quit smoking. But there are also several strategies and quitting techniques that may aid smokers to finally give up on this tenacious habit. Quitting smoking all begins with one's intention to stop. They must have the will power to overcome the craving for smoke. There are also a lot of quit smoking products in the market. These may also be worth trying. Support groups are proved to be very helpful, too.