I'll just have a big serving of self-pity, thank you

It's a sunny, warm day outside and I'm sitting in my office trying to work on my shitty project. I've had this cough for two weeks now, but I cannot pull myself together and refrain from smoking. I wake up at night, totally disoriented and not knowing where I am. My relationship is a total mess. I have no idea how my life will continue, which I don't experience as a very exciting thing at the moment. My family sucks. Most of my friends are either far away and/or have their own problems. My laptop is due for repair, which means I have to send it in and I'm lucky if I get it back within the next two months. It feels like both on a professional and private level people expect something from me which I can either not give, or, in case I provide it, I don't get any recognition for. I used to be a sport maniac, now walking up the stairs to my office or appartment exhausts me. The only things that make me feel good these days are getting drunk, watching stupid shows on TV and eating unhealthy food.
All in all, it's like Socrates said: I know I know nothing, and that is not as thrilling as he wanted to make us believe.