An extract from Wikipedia for motivation :
Smoking cessation will almost always lead to a longer and healthier life. Stopping in early adulthood can add up to 10 years of healthy life and stopping in one's sixties can still add three years of healthy life (Doll et al, 2004). Stopping smoking is associated with better mental health and spending less of one's life with diseases of old age.
For health and well being, the sooner you decide to quit the better. Quitting offers a number of health benefits. Even if you are a heavy smoker, if you are committed to giving up, you can begin to enjoy the benefits of being smoke-free in a very short space of time. It's never too late to give up smoking! Quitting can prolong your life, no matter how old you are. Here’s what to expect:
* Within 20 minutes blood pressure returns to its normal level
* After 8 hours oxygen levels return to normal
* After 24 hours carbon monoxide levels in the lungs return to those of a non-smoker and the mucus begins to clear
* After 48 hours nicotine leaves the body and tastebuds are improved
* After 72 hours breathing becomes easier
* After 2-12 weeks, circulation improves
* After 5 years, the risk of heart attack falls to about half that of a smoker
* After 10 years, the chance of lung cancer is almost the same as a non-smoker.