Change4Life
You just explained the #1 reason I relapse every time, regardless of how long I was sober. It could be 3 days or 3 months sober, but I would get an urge and my AV would say, "You made it this long with no problem, so what's a few beers?"
Until I recently realized that there is no such thing as a few beers, I couldn't stay sober. Just one beer spirals into weeks and months of binges.
Hang tough, start over and good luck. We're all in this together.