Just take a while and chill out, read a good book, listen to some good music, and realize that the world is not always a pep rally, nor should it be. I have been depressed, I still am in a way, and I know how it is. I don't know how severe yours is, or even what a severe depression is. All I know is that downer music and starring at cold, gray pictures gives me some sort of religious sensation that nothing else can. People ask me why I like things that are so bleak. I'm not sure if I can even answer that. I don't listen to all of that death rock (or whatever the hell pigeon hole you want to call it) or look at morbid things like dead dogs and stuff, I'm just not really into being pepped up all of the time.
As far as the work thing goes, get a job. I didn't have the great experience of HS that most people fall in love with. I just went, did my thing, and left. I had friends up there, but none that I would consider close by any means. For I while I didn't associate with anyone my age outside of school hardly. The job helped a bunch. I became really close to everyone up there, and I have to quit in a week which will be really hard. I got to reinvent myself up there, so now I do go to parties sometimes. This doesn't mean I don't some sort of cold feeling about the world, I just have fun too.
I guess I'm just trying to say that I wouldn't really consider depression to be a bad thing, just don't let it control you like it did me. Life is what you make of it. Force yourself to associate with people, and speak with as many different people as you can.