I quit smoking about 2-3 months before I started Atkins (started atkins about 1 month ago). I am really glad I didn't start both at once. My sugar/caffeine withdrawal the first few days of induction was HORRIBLE. I felt terrible for three days, and had headaches for a week! If I had tried to quit smoking at the same time, I would have given up! For me, it really works better to get rid of one bad habit (or start one new good habit) at a time. If I do to many things at once, I get frustrated.
Quitting smoking has definitely made me feel better, and I don't smell like smoke all the time. Very worth it!
Next goal: start exercising, darn it!

-Angie