yes - like right now I know I should be in bed - relaxing if nothing else - but I went for a nice walk with my 'better half and my partner - HaHa!! - and enjoyed it so much - I am on a bit of a buzz - pay back time in the morning !
I'm glad you breathed your way through the situation. Everything you say is relatable.
I often leave projects/hobbies untouched/unfinished not out of depression, but either because of exhaustion or they don't fit into my "energy budget."
It's natural to try and enjoy yourself and to help out, and it's natural to be totally bummed when your body doesn't go along with the plan. I think that staying as positive as you can through this is key to keeping depression at bay. Listening to your body is a better strategy than bounding on fearlessly. The later may feel good at the time, but has too high of an interest rate in payback!