Well, I don't have any studies or anything to back up either way, but I am sure it can be done. It is up to the individual, and I smoke cigarettes too. I wanted to quit because of the high prices and a couple times, my mind played tricks on me and it felt like I was getting a crack high. Which ya know, is impossible from cigarettes. LOL. Anyway, I am only 60 days clean (technically- today is the day- though you know they celebrate the same day each month), and I tried quitting the cigs last week. I got a bit grumpy, which I felt I could handle, but then the nightmares about smoking crack came and I was like, ya know, it might be too soon for me..... So that was for me. I'd say to give it a shot. Try a couple days or a week and see how it works for you. Things start seeming too far off, go back and don't feel bad about it. For some of us, we just need to take it easy and do one thing at a time. Worry about the addiction that would kill you more quickly than the one that won't.