Interesting, my dad quit smoking cigarettes that way also. Got sick, couldn't smoke, and never smoked again.

But regarding your own loss (hmm, that sounds like someone died! "I'm so sorry for your loss..." eek!), congratulations my friend. I know it's something you've wanted to do for a long time. I've known a few folks who've achieved similarly impressive results in recent years. Interesting to hear about how you did it with the help of an app!

p.s. I've managed something along similar lines. For a number of reasons (especially lack of money!) I've smoked M only once in the last month, and that was just a single hit at a rock show. I realized recently that I'd been doing it for basically half of my life, every day when I could and that I didn't want to live that way any more. Merely reducing intake was relatively easy, but going a full day without was very hard indeed.