[j_jochem]

I know this is anecdotal, but I‘ve taken about 8 years and 10 attempts to successfly quit smoking. On half of those attempts, I made it past the 28-day mark, even past five months on one attempt before relapsing. Physical withdrawal is easy, staying on top of your mind is much harder. I’m at 2+ years now. I‘d say a year of not smoking is a meaningful predictor of not relapsing. 28 days shows you‘re making a serious effort.