Hey man, hug
I say the same thing I say with every cancelled indy devlog that I follow here: you never owed us anything to begin with, we loved everything you've shown us on its own merit, and IMO we should already be grateful for the fact that you were brave enough to share it. It hasn't lost any of its inspirational value just because you moved on to something else either.
From what you write here I agree that letting go of this project is probably for the best for now - although I strongly disagree with how negative you are about it was shaping up to be so far
. I understand the feeling though - anxiety can lead to focusing on negative doubts and escalate into a downward spiral.
Keep working on your personal demons, you're on the right path! It gets better, just hang in there!