I think the most important thing is to have a plan in place for the not drinking.
For me, AA was the answer. When I relapsed after 4 years clean/sober, it was awful, and the anxiety in between drinking binges was damned near unbearable.
When I got sick and tired of being sick and tired, I drug myself back up the steps of AA and started over again.
Find something that works for you in order to stay sober indefinitely.
I understand the shame and guilt of drinking again.
Sending you hugs of support!