I hope things have gotten better for you. I don't know if you need this, but in case you do:

You say you haven't accomplished anything. I challenge you to reframe that. It looks to other people like you've accomplished nothing, but if you look hard enough at your life, I think you'll find things you've managed to do even though they were really hard. And then you might dismiss those things as being unimportant and not really counting. I did that for years.

I've been on disability for more than a decade (for mental illness), and I've struggled to see myself as valuable even if society maybe didn't. But recently I met someone who had a use for the expertise I've gained from lived experience, and it's made it much easier for me to think I have something to contribute.

It may be that after you get through this tough time, you'll discover a use for the strength and resilience you've been developing. There may be no one around you who can see how amazing you are and will become, but acknowledge it to yourself. And if you don't believe it, keep telling yourself until you do.