Sorry to hear you're going through this, TRF. A couple of relatives of mine who are both around my age went through divorces... one went to a therapist and the other one kept mostly to herself. A couple years out from the divorces, the one who went to therapy is much happier and in a much better place than the other. Your mileage may vary, but IMO the therapy had a lot to do with the difference between my relatives. I hope you'll stick with it.
Sounds like you could use a change of pace to give you something to look forward to. Try making a point to do something different every day that takes you away from your usual haunts and doesn't remind you of your situation. Doesn't have to be a big change or a radical one. Take a walk in a park you've never been to before. Go to the next town over and eat at a restaurant you've never been to.