If it's any consolation, I think I know exactly how you feel - but while you may not have the skills, somebody's only got to speak a few sentences with you to realise you
do have great intelligence and potential. Employment's a very cruel mistress, and it's very frustrating waiting for opportunities and not getting the chance to show what you can do, but when they do come along, grab them with both hands.
Although, as someone who's just lasted 4 days in a job because they found the boredom of the new daily routine [and that's coming from a guy who once spent a month typing postcodes] even more depressing than unemployment, I'm... possibly not the best source of advice!
And yes, I've complained before about looking around me and seeing people my age in grown up jobs, doing grown up things, in love, happy etc. - and it's maddening, so too is wondering what
you've done to end up alone and stuck in that rut and again, I can only sympathise. It comes in phases, and once you're entrenched in one, it feels like you'll be there forever
And for my part? Doctor's confiscated my meds because they were giving me an evil rash, and the strange dreams (usually involving me fixing things I've screwed up this year, then waking up and realising they were still very much broken) were getting me down - so by the end of next week, I may be a gibbering wreck again. Not impressed, but once again, I've only really got myself to blame. That's not the first thing I've sabotaged for myself by being a jerk this year.
It's going to be a long, hard winter. But I'll get through it. And this post has all gone a little bit stream of consciousness...