Hello & Welcome, Corvid.
You're right. I cannot help you. At best we can compare and contrast our experiences of hopelessness.
From what you've written, I believe
you feel your hopelessness (and guilt -- there's a subject) more than I do. My experience of depression is marked by significant apathy and emotional blunting, consequently the years consumed by the illness do not
consciously weigh on me all the time. Every once in a while I explode, but not often anymore.
What keeps me "going?" In my case, the "going" is pretty much just "existing":
- Meds
- a tiny family
- a dog, but he's passed
- personal inertia
- a wandering mind that tends to pull me along with it
- the weak remnants of interests and values
And also worthy to list:
- interacting with PsychCentral friends.
__________________
My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.