I am not a smoker, but I watch smokers and smoking closely, just because nicotine has neuroprotective effect. Typical story of quitting smoker tells that there

I am not a smoker, but I watch smokers and smoking closely, just because nicotine has neuroprotective effect. Typical story of quitting smoker tells that there is a stack of various negative symptoms for three days. These three days have to be completely distraction-free. Then worseness of symptoms drops and by the end of second week the life goes back to normal, more or less so. In the worst case one should be ready to fight himself just like heroin junkie, because withdrawal symptoms are quite similar in both cases, it is the magnitude that differs (and no joint pain, of course). For example, there can be problems with sleep and just like with heroin quitting it restores only after half of year.