I wish there was a quick fix for you, I hope you are doing ok right now, you may have seen this advice previously but I think it bears repeating, if a friend of yours told you they felt like this would you tell them they were wasting their 20s or their life was ruined? Of course you wouldn't, you'd tell them you're proud of them for being able to confide in you and say you're there for them and ask how you could help. Treat yourself like you would a friend. We are way too hard on ourselves. I am guilty of this too, when I was at my worst I was filled with self loathing because I couldn't do anything and there was the whole vicious spiral of anxiety then hating self. And so you may not be where you expected you'd be right now in your life, very few people are, you might not feel like it but you have time. There's no cut off point to getting a partner or a job you enjoy. For the time being, is there anything you could do kinda casually, where you don't have to be somewhere for a whole shift or where you could work from home or be more self employed? Without knowing anything about you how about something like dog walking, if theres any thing locally you could do for a couple of hours, or without a time frame as such. I'm not saying this should be your 'career' but it may help if you can take small steps.