Ive been down this path before and stopped for nearly ten years, that's when I reasoned surely "Just one" wouldn't matter. Well I had that just one which became the catalyst for me ending up a 40+ a day smoker more than doubling the previous 10 - 15 per day. I now know that there is no just one, and as much as I think I could become a social smoker I realise that there is no such thing.