Oh Christi what a tough, tough place to be. If you cannot see anything to look forward to at the moment, then don't torture and exhaust yourself by trying. Just exist. Sometimes that is all you can do, and sometimes that is enough.
Exist, and breathe, and observe your dds, and eat (if you can), and sleep (when you can) and get up tomorrow and do the same all over again. Don't pressurise yourself into TRYING to be happy or optomistic. Listen to the sounds that are around you - sounds that are far away like traffic, sounds that are close to you like the buzzing of your computer. Just be.
And then, gradually start to do something with that wonderful cv of yours. Go back to the recruitment agency that got you the first interview, ask them what else they have? Make a list of all the old contacts and networks you used to have (don't reject any at the moment, just jot them all down).
It's so crap at the moment, but you will get through it. And drinking will not help you tired, sore red eyes. Being sober is something that you CAN achieve, and you can achieve it today. You don't have to wait for a job or a house. You can do it today - all on your own (except for us lot of course) x