Sorry to hear that you relapsed, Byebyedrink.
You remained sober for three months so you know that you do this.
Maybe, examine the mindset of why you used alcohol as a reward and formulate a plan for alternate reward systems - a nice meal out, a new piece of clothing (ice cream always works for me); shore up the holes in your plan.
You can always log-on here when you are feeling vulnerable; there's always someone here to offer perspectives on your situation.
Glad that you are back.