I believe they are related. I had quit smoking for 1 1/2 years until I started hanging out at the bar with my sister. It just goes together, a drink in one hand, a smoke in the other. I felt bad about bumming smokes from my sister, so I bought a pack to smoke when I went out with her. One thing led to another, then I was on my break at work and said to myself, "well, I'm on a break, I think its OK to smoke", now I'm back to a pack a day!