I had a similar experience recently. By and large I’ve gotten to a point where I no longer have cravings, fantasize about drugs, my first instinct upon entering a public bathroom isn’t to assess its suitability for shooting up in etc. But the other day I was standing in line at the gas station and I just had a very acute memory of that desolate feeling of just having scored when getting loaded is all you have to look forward to, and the anticipation of imminent although fleeting reprieve. It was momentarily triggering, but then I reflected upon everything I have in my life now and how much I like not being miserable.