Bath, shower or all-over wash (depending on how chaotic your life is. I've been there).
Half an hour nap.
Every moment that you have a roof over your head and are not in major physical pain is a 'happy' moment. Start counting them. You'll feel like a fraud at first, but do it anyway.
Five minutes doing something, anything. Change a pillowcase. Clear part of a table. Gather socks (choose one item) for washing. Very small goals, very small steps. Tiny progress is progress.
Counselling might not have helped yet, but it will in the end. Took ten years for me, but when it happened, it was like flipping a switch and I wasn't depressed any more.
Use this. Don't think about anything but the sound. If your thoughts wander from the sound, forgive yourself and go back to it.
Whenever you think something bad about yourself, think 'And I forgive myself'.
I was in a similar place to you for over twenty years. And I'm not now. It can be ok for you, too. Focus on the moment. Just this moment.