Hi. I'm new to this forum, and would like to respond to your question about cravings.
It's been been about 30 years since I quit the habit (wow, I feel old all of a sudden!) I used to think that the urges to smoke, once the nicotine was out of your system, was all psychological. Although the psychological component is a strong one, there is also a physical reason why you have your cravings. As a nicotine addict, your brain has acquired additional neuroreceptors on your brain, allowing the drug to interact with your brain even more deeply. Once you quit, these many neuroreceptors become deprived. The good news is that the body dismantles these additional receptors, reducing your craving. There is a short youtube video that I posted on my new website that explains this very well. You can see it by clicking on this link: http://nu-glo.com/cigarette-smoking-its ... -addiction
I started that web site because one of my kids, and her husband, smoke. I want so badly for them to quit, so I'm gathering informative, helpful, (and scary) information for them and for anyone else who struggles with nicotine addiction.
Anyway, to respond to your question about cravings, they lessen with time. But like the recovered alcoholic or the former heroin addict, you'll at least think about it from time to time. After 30 years, I don't have a craving for it anymore, but in some of my dreams I am smoking again. Time heals all wounds.
