I'm in the same situation and often I can't really see much point in carrying on. However, I've been like this before; I don't know if you have, but if not all I can say is keep carrying on - you never know what might be around the corner.

Well I would say go find someone you can talk to, if you can do that, but I never followed my own advice and I have managed to get through some pretty the low points in my life. It was not easy and it didn't change quickly but eventually it got better. It's good you have a job. Put your energy into what you are doing.