Depression at work

I have a problem. Everytime I get to work I get depressed. I'm working with my boyfriend in the same place, but it's not the reason.. I just can't seem to comunicate with the other people here, I tried but it's not working. So all the time at lunch I sit depressed and I understand that it's also hard for my boyfriend to see me like this. He told me that I should find another job but It's not so easy, I don't have diploma and this job is really good for someone without diploma... As well as, my friends live far away from me (because I moved in with my boyfriend and it's far from them and from my family), and I can't seem to make new friends... I 'm feeling lonely and It's effecting as well on my life with my partener, he (as every man would feel) chocked, he feels we're always together, and it's true... I once had a life I was independent but now it feels my world is spinning aroung him, and the house and I feel that I want to do things... and be with people. Don't make mistake I don't want to leave him, he's the best thing in my life, but just how to overcome this luck of self confidence at work? how to not be depressed at work.. what can I do to make it better? I really hope this is the right forum... Regards Trin