That's awesome man, congrats to you! I think you did it the right way. Certain things you can quit cold turkey but then it becomes a far stronger battle. Being able to replace is the best way to go. I've helped several people adjust and get rid of some awful habits with replacement therapy, it's the shit!

I've had some things I've fixed over the last year or two that I'm pretty stoked about. Things that were really long term challenges, but with the right motivation and adjustments, we can get rid of some of those lingering assholes and be better on the other side because of it!