hi I started smoking some time ago because my friends did (like most smokers). I've seen good improvements in my memory and concentration since my attempts to quit PMO.But I'm curious about whether smoking has an effect on your cognitive function i.e memory, concentration & clarity of mind or not? I feel like PMO is somehow easier for me to quit, because it's something personal for most of us.But I have a hard time quitting cigarettes; mainly because my closest friends are smokers and we gather together once or twice a week to talk.Any advice? and also, "Looking for new, nonsmoker friends" is not an option, because these are my band members and we do music together; so we are always in touch with eachother. The main thing I'm concerned about in regards to smoking (other than health issues) is my memory and my studies...and I really wonder if cigarettes have damaging effects on my long & short term memory & concentration or not.