What exactly is it about being where you are that you're finding so soul destroying?
Is it the hours, the work itself, the fact you don't feel like you have friends or family about the place, what you do with your free time?
If you can pin that down you (or you and the power of Mumsnet) may be able to come up with some ideas that make a surprisingly big difference.
E.g. for me, I have a well paying but pretty full on job in the UK. I know I get miserable when the house is dirty, so I accept that I don't save as much and I pay a cleaner which means the house is always at least "okay".
Obviously that's a very small example but there may be others - accepting that you'll spend as much as you need on books because there's no English language library, or paying for a meal delivery service because you don't have time to cook easily.
It's not going to get rid of missing your family and your friends but there are things that can be done even to help that - going home and seeing them, meeting them half way, arranging a virtual quiz night or whatever.
I'd also say that I tend to be happiest when I don't do too much introspection. So while it's worth looking at what changes you can make, given it's only 8 or so months, once you've done a think and made the changes you can you might be best off just throwing yourself into being busy enough that you can't think about it too much.