I went to a six week rehab program several years ago in my first attempt to quit drinking. One day I was talking to an older gentleman who had some sobriety in the past. He told me that he had quit drinking for ten years and decided to have a beer with the boys when his son announced his engagement.
I will never forget what he told me next. "As soon as that beer hit the back of my throat I knew I made a huge mistake". Sure enough he was completely off the wagon and couldn't stop drinking which led him to rehab.
The idea that ten years of putting in the work could be gone in an instant chilled me to the bone. I remind myself of that story all the time so I never get complacent in my recovery.