I have also been in your situation, 30 days,60 days,90 days, and up to 8 months sober...then BAM I drink and the living hell starts all over again. I am now 37 days into my sobriety and this time I get up and read posts each and every morning over coffee. I don't even leave my house without reading and reminding myself of the dangers of picking up that 1st drink.
You can start again, as they say here...maybe add to your tool kit?
Blessings