I am a smoker who is trying to quit smoking. I really wanted to quit smoking for the health of my beautiful wife and precious daughter. Why is it so hard a smoker to quit smoking, it takes willingness and effort. It was all caused by the effects of nicotine.
Over time benefits you have : 20 minutes after quitting –> Your heart rate and blood pressure drop. 12 hours after quitting –> The carbon monoxide level in your blood drops to normal. 2 weeks to 3 months after quitting –> Your circulation improves and your lung function increases. 1 to 9 months after quitting [...]
Quitting smoking is not easy, but you can do it. To have the best chance of quitting and staying quit, you need to know what you’re up against, what your options are, and where to go for help. Why is quitting and staying quit hard for so many people? The answer is nicotine. 
Nicotine is a drug found naturally in tobacco. It is as addictive as heroin or cocaine. Over time, a person becomes physically dependent on and emotionally addicted to nicotine.
The physical dependence causes unpleasant withdrawal symptoms when you try to quit. The emotional and mental dependence (addiction) make it hard to stay away from nicotine after you quit. Studies have shown that smokers must deal with both the physical and mental dependence to quit and stay quit.
