I don't know if anyone else reads BBC Capital, but there are always good 'expat' articles in there.
This one was interesting on the attitudes need to make friends in a new country, but that it is also very hard as well.
"...an independent spirit is crucial. There needs to be a degree of fearlessness, and a strong enough mentality to be able to handle the loneliness, which can be crippling at the best of times."