Glad you came here to work through this Auchie. You had some significant sober time under your belt so you know what to do. Even though this is a significant setback, it doesn't erase the work you've done in the past. Learn from it and see if you can figure out what decisions you made that led up to the night at the pub - most times we've made the decision to drink well before we actually do it. And once you learn, apply it and adjust/add to your plan so it doesn't happen again.