Tips for staying motivated?

I am overweight, and living in a foreign country. I have been losing weight at a good clip since I put my mind to it, but I am getting really frustrated with it. Its just that I am *so* overweight - it gets so overwhelming. Yes, its my fault for letting it happen in the first place, but now I am trying to fix things, and its getting harder and not easier. I'm only about 10% to my goal! What are some tips you use to help keep yourself motivated to eat right and exercise when you are feeling down about it?