You can do this. You made it to 3 months before so that's proof you have what it takes. The furthest I made it before this quit was 53 days (I'm 7 months sober now).
All the crippling anxiety and self-loathing I had has faded away and a new world is opening up. This will happen for you too, if you can stay sober long enough.
Like you, I live in a small town and I'm in a counselling type profession. So SR is the only thing I've had to keep me going since I quit. But it's working because I'm making it work every single day.
Don't be fooled into thinking life will never be quite as good without alcohol. That kind of thinking always led me back to trying to moderate my drinking....which never ever worked.
One day at a time.