I realise that smoking is a big no-no for many folk, particularly with ME, but it's something I've never been able to quit - I imagine others might have the same trouble. However, I did give up tobacco on the 16th of November last year, and now very happily use an electronic vapouriser. I switched over gradually, and I suffered a bout of mild depression for a couple of months, just couldn't get any joy out of anything (it really, really spoiled November 5th fireworks night for me!), but it did soon lift. By 6 months on, I could really, really feel the benefits of the extra oxygen and lack of carbon monoxide. I haven't put weight on, and I do have a fair bit more energy. I do know that the percieved "wisdom" (of the puritans who still drink alcohol and tea and coffee) is to be "drug-free" but nicotine is a cognitive enhancer, and in itself, in the doses used, it's not much different to a cup of coffee - just a mild natural stimulant. If anybody is a smoker, unable to give up cigarettes, I really would very highly recommend trying the electric ones.