"I never, ever thought I would lose a perfectly good 6 months quit because of drinking; and I only had a couple of glasses of wine, and they made me feel invincible I guess. They pushed me to have the "just one", and we all know by now such thing does not exist; they come in packs, and once you smoked the first couple, you won't stop there, the packs, and months, and years, are following closely, and it took me over 10 years to gather the courage to go for my last quit. Please learn from our failed experiences, don't try it for yourselves, guard your precious quits!"
They shared their lesson so you don't have to learn it for yourself.
A quit is a terrible thing to lose.