Accidental cold turkey

There was a time in my life when I smoked cigarettes and drank beer.  When I was growing up, I found the behavior repulsive, and vowed I'd not be like my parents and do either.
When I smoked and drank, I had no intention of being a parent for I was a dumb college kid that had no idea what he wanted to do with himself. I had a vague notion of being a librarian, so I went to grad school. Only one school in the state was accredited by ALA, so I applied to said school and moved upon graduating with my BA.
Aside from an uncle and cousins, I didn't know anyone where I moved. I wasn't the social butterfly, so I focused upon my seemingly expensive schooling(I wasn't on a minority scholarship like I was during undergrad). I spent a lot of time cooped up in my studio apartment, but somehow, I befriended a few classmates. Three of us would go bowling on Wednesdays. I'm a horrible bowler, but I enjoyed it for they were my best friends(one would become my wife while the other was best man at said wedding).
During winter break, I got hired in the reference department, which made for a fun new year given that I had full schedule since I was taking 15 credits(8 was considered full-time).
To be honest, I don't recall much, but I smoked a lot and somehow managed to get engaged. After I finished my spring finals, I didn't feel like smoking. Can't explain why, but I just didn't feel the need to buy or bum any smokes until I had moved some furniture one day a month or so later. I was enjoying a beer and a smoke on the balcony of my apartment with my friend that helped me move when my fiance came out and said "what are you doing? I thought you quit!" I never said anything to that effect, so imagine my surprise.
People have a hard time believing I ever had such a habit, but they have a harder time believing that I quit the way I did.