Started smoking at 19, quit 4 months ago at 40. Fiance did too. Trick was we got sicker than shit and ended up literally in bed for a week, so we didn't go outside to smoke (thank god for no-smoking apartment). By the time we were feeling better, we didn't really want them. I mean, we WANTED them, but we didn't NEED them. So we decided to make a go of it and here we are 4 months later. I have put on some weight, which sucks, but I'm already working on that. We still look at each other every few days like "you know what would be GREAT right now..." but quitting with someone else makes it easier.
I've already stopped coughing quite a bit, and the extra money not spent is nice. I wish all of us quitters the best. Ironically (?) I've been having minor issues catching my breath (often) since I quit. COPD finally caught up to me? That'd be a pisser.