1 Depression is pretty bad.

Not having a haircut is also pretty bad.  I haven't had one for nearly as long as you.

Get one.  It will help.

2 Master Duck, thou must persevere.  There are too many who enjoy your wit and wisdom.  Plus it sucks to be depressed.....

3 One minute at a time. Sometimes one breath at a time. Micro-managing your time gives you a wonderful sense of focus and achievement.

4 One foot in front of the other, indeed. Or one flap of the wings at a time, pick your metaphor.

5 To heck with them. They have treated you badly, and dusting off your sandals is appropriate and freeing. You are no longer a minion in a not so nice place. Good.
But you also need to rescue your stuff from their smallminded yet nefarious hands.

6 The other thing is that, since you are now unemployed and since you have health problems, your county and city probably have people whose job is to help you out and give you good advice. Also there are NGOs and charities who want to help you with all your legit problems.
The sleep situation, for example -- I imagine somebody can tell you how to set up your mattress for easier egress, and maybe even help you do it. There are tricks with slanty mattress setup, grab bars, all that good stuff. Even if you/others have to set up your bed in another room, that is okay.

7 Also a chance to make progress on the clean-up. Set small goals, easy steps to accomplish, and allow yourself to get caught up in the flow of progress.