Hi, I quit smoking for the day 6th now. This is my first try to quit smoking I have never tried to quit before, I freaked out that I may develop lung cancer later on and I immediately quit, I generally nfeel qwell, I can breath more easy, I feel lighter and I did not cough even once in these 6 days, I was smoking for 4 years, now I am 23, also I am on Nicotine gum\4mg, I do around 5 gum-to 6gum a day, I am still experiencing stupid things, when I go to sleep I can not get a proper sleep, I am always waking up, every two hours and checking the time on my phone, when I again fall a sleep, and after two hours again waking up, and like that all night, also I have very bad dreams, and I sleep dreami9ng about stupid, crazy things, nonsenses I have never dreamed before, what should I do because 5 days I feel tired and restless, I am really getting exhausted, and I still have a desire for cigarette, while doing my night job at the night club, or when I am getting bored or when I am stressed out. What should I do with these things happening to me, I am getting really tired now, but I do have strong will to stop and not to touch any cigarettes ever, I did not touch a cigarette for 6 days. Help me out what alternatives do I have? Thanks a lot for reply. Moreover what is Nicotine is it damaging your body in anyway? Is it a drug? what does it do? How NICOTINE is damaging your lungs, or it is not doing anything bad for ur lungs?