I'd like to riff off of the above poster's great comment.

Even taking an inexpensive trip through Mexico by bus (Autobuses ADO) and staying in hostels might effectively hit a 'reset' button.

If you've already had COVID, you don't have to worry about that, and climbing a few ancient pyramids, eating fried lime/salt crickets, and being surrounded by new sights, smells, and sounds at the tianguis might yank you out of your fog.