Hi Doug
When we're feeling anxious and under stress, it's really hard to take a step back and look at the bigger picture.
Your bigger picture looks like this: you're 106 days sober, after more than 2 decades of drinking; you've been getting yourself to AA meetings almost every day for the last 3 months; you're feeling much better mentally; you got back to work; you did really well on an exam.
That's a positive picture. And it was self- directed action that has got you there.
You've missed a day of work. OK. Don't start picking the eyes out of your situation and leave yourself wondering if it's going to be a permanent problem - look at the bigger picture of all you've achieved the last 3 months.
I think it's your anxiety talking and getting you down. The same thing happens to me and I have to actively use self-talk to get myself out of the minutiae of the moment, and see the bigger - and much better - picture.
Your life is looking up. One bad day is not going to cause a change in direction!