Do you mind if I ask how old you are?
Sometimes, what seems like world ending, insurmountable problems, turn out to be nothing later on.
Not saying this is your situation, as I feel exactly as you do. I lost the use of my fingers, the ability to walk, to drive, my business, everything, and my only family and best friend of 24 years (wife) - all within a year. So at 53yo, I feel like I have nothing left to live for except sitting around in a wheelchair all day.
Despite how bad my situation is, sometimes it makes me feel a tiny bit better when I think that there are people in this world who have it a lot worse off than me, For example, when I think about the fact that I'm now stuck in a wheelchair and can't go anywhere, I try and tell myself "well, at least I'm not completely paralyzed lying in a bed all day and can't move anything but my eyeballs" or something like that.
I don't know, I'm kind of weird like that. On the off chance that it might help you, I figured I'd give it a shot.
Wish you nothing but the best, and hope you can find peace in whatever you do.