Yes, I've never liked Sundays. For the very reason you mention, "hopefully tomorrow, I can return to my routine of going to the mall and walking.."
Saturdays I can run around, things are open, and everyone stays up late. I watch Saturday Night Live, once in a blue moon it is funny.
It took me a long time to get past the Sunday blues, of thinking of going back to work. melancholy.
I like knowing I can call the doctor if needed, my oncologist promptly closes the door at noon on Friday. I hope nothing too bad happens over the weekend.
I have started watching football when in season. It really can be exciting at times. But my team is struggling this off season with big questions about the QB.
Routine, that is the answer, something you look forward to. Maybe you HAM people could get together on Sundays?
Or maybe it is the TV show 60 minutes that is depressing? I prefer Jeopardy!
I live in PA and went to watch the snow geese a couple weeks ago. I felt awed.
I think the key is to make plans with people you enjoy! Hang in there for Monday, then you can breathe again.