I have been in that state many times. I guess just putting one foot in front of the other has helped me as hard as that sounds, I just continue going through the motions. I have managed to do lots of harm to myself during these phases. In the most recent one I have pushed all my friends away, I no longer feel as though I should try, I lost my confidence in my work and I keep spilling over for others to see, not something I like too do. I have backed out going to my T regularly, I have weaned myself off my meds. Although I have done all of this I feel stronger today, I am scared of were I might be in a month, a week, an hour, or even in the next 5 min. No matter were I am I too will have to put one foot in front of the other.
I really don't know if this helps you at all but if not try to find one thing to get you out of bed in the morning.
your pets
your garden
brushing your teeth
seeing the dew on leaves
or even just the sound of silence.
Good luck my thoughts are with you.
NH