Maybe go back to the basics.
When I first stopped drinking I kept it really simple. "Today I will not drink, no matter what."
All the rest of the noise in my head, "I need to do this. I need to do that. I need new friends, I should do more exercise, I have to clean my house, I need to get a job, I should go to church, I should call someone and make social plans, I need, I should, I need, I should...."
Exhausting.
So. I will not drink today. If I get that right, I've won.
All the other stuff? Not nearly as important - it will get done or it won't.
I will not drink today.
Ta da. Simples.