I'm new too, but I thought I'd reach out as your post kinda reminded me of me, in a way; I've been in the system very much longer, but have had a dip lately...
I would say - (advice that, I know is so much easier to give that take, but...still good advice) - Remember your achievements. Remember how far you have come. Allow yourself to recognise that people see good in you, even if you can't right now. Allow yourself to recognise that sometimes the illness we share makes us see things in a distorted way. Recognise that the illness twists things, and sometimes makes you lie to yourself...try to believe the good things, because the illness only ever whispers bad
I wish you all the best xx