I get the hopelessness thing in bucketloads when my mood goes down, and it can be paralysing. Working my way out of it means I have to keep going, keep looking after myself, even when it feels pointless. I've isolated so long that it's hard for me to even conceptualise people noticing me or caring for me, so when they do, I feel awkward and panicked.
I've found a lot of answers in Schema Therapy, which looks at common warped core beliefs that we develop, particularly when there's a history of trauma.
One that you might relate to is Social Isolation/ Alienation: the feeling that one is isolated from the rest of the world, different from other people, and/or not part of any group or community.
It can be a bit of a chicken and egg thing, because certainly it's not really a "warped belief" for me anymore, I've isolated to the point where I am living quite seperate to the community around me. But knowing that the underlying belief, that this is inately who I am, is something that was created by my trauma, and can be fixed, offered me hope: I'm not weird, this is such a common feeling that they've given it a name. And people recover from this stuff.
I hope that gives you a ray of light like it did for me.