It's pretty fortunate that the nicotine content of a cigarette is actually very small!
Nicotine in it's base state is a highly dangerous (if a large amount were to be consumed) clear liquid - luckily (or unluckily, depending how you see it) there's only ever a very little quantity of it in cigarettes so it only acts as a stimulant.
It's known for a number of health-threatening effects such as the release of extra glucose into your bloodstream which inhibits life-supporting insulin, it increases your blood pressure, causes shallower breathing and a pumped up heart rate.
Nicotine is just one of the poisonous direct by-products produced when smoking and is absorbed into your bloodstream each and every time you take a puff and there starts a genuine vicious circle - the nicotine exits your body very quickly, so you begin to crave for that next cigarette.
So there it is, nicotine by its' extremely addictive nature causes the smoker to feel the need to stock up the nicotine content of his/her body and no matter what any smoker knows and feels regarding the ill-effects of smoking, they will always 'need' or crave for a further cigarette.
It's usual at this point that the 'vicious circle' will now lead to what is known as "chain-smoking" so that a great level of nicotine is forever maintained inside the body.
It's a safe bet that most smokers will smoke at least twenty cigarettes in any one day and there are numerous smokers of course that would far exceed this amount as they crave more and more for that nicotine induced need for a further 'high'.
Which of course goes quite a long way to explaining the biggest difficulty a person faces when quitting smoking - powering through and over-coming that nicotine craving is just not always that simple and for a number of people would mean that it will take some significant time to do just that.
Still, after all that has been said, understanding nicotine - what exactly it is, what exactly it does to the human body and mind and how it does it, will arm you further for the war you're about to proclaim on a toxic and destructive habit.
Don't prevaricate, obtain the method that best suits you for helping you to quit, set your goals and stick to them and like so many others already have, you will triumph!
In summary; nicotine is extremely addictive and just like any other addictive substance, is dangerous but even though you're bound to find it a little tough at first, being able to kick the habit is much easier than you think YOU ONLY HAVE TO WANT TO!
Quitting smoking naturally, speedily, and permanently isn't and has never been about overly complicated systems and/or poisonous pills and patches - it's all about simplicity, a little bit of will-power and some genuine tried and tested tobacco-quitting knowledge.