(((((((((((silver tree))))))))))))))))
Sorry you're so down. Can you spend time with your parent? Do some small kindness for him/her?
Aging parents do appreciate our attention so much more than any other time.
It may not be your time yet. As you said, your parent is your concern, and doubtless would be heartbroken if you let go. Perhaps it is your task to stay until they are gone.
Thinking of you, "my stranger", since I can't say "my friend". You are in my thoughts tonight especially.

I hope to hear from you tomorrow.