I'm glad you're writing about this to get it out of your system. I'm bipolar, as well, and I can empathize with how your mental illness can dovetail with other urges. While I'm very glad the alcohol isn't knocking at your door, I understand how cigarettes can seem very attractive in a moment of weakness. I watched both of my maternal grandparents die from lung cancer...Towards the end it's like watching a fish out of water; it's a terrible way to go. While the immediate impact of alcohol (for me, at least) would be far more devastating than smoking, try to keep an eye on what's down the road if you do take up the habit again (I know...I hate to sound preachy).

Keep posting here as long as the urges persist...I hope we can support you through this rough stretch.