About a year after I quit, I made a new friend. He was a nice guy, seemed normal, but one day he casually mentioned that he occasionally used stimulants including amphetamines. I cut off all contact with him immediately (as did all of my close friends. It’s a good example of support in this case.)
I guess I was able to recognize and decisively take action to avoid temptation about a year in. This was likely also luck. I was in a pretty good place with my life in general, had that occurred six months earlier or six months later it could have had a different outcome.
So the answer is either a day or a year or never. It’s been ten years and I’ve only known where to get meth for about one day of it. I still get cravings to this day, I’m just no longer in the habit of indulging them.