Culture shock: In your opinion, how can one overcome a cultural shock?

Talk to more people from that country, find out more about it.    Learn the language and try to communicate with the local people.   Greater knowledge helps to mitigate the shock of different approaches to life, and provides a realizatin that even in our own lands there is plenty to dislike and disagree with.    Like the example I gave from Turkey, there are many positive sides to any culture, the worst examples are not the whole story in any society, as Chimamanda Ngozi Adichie has pointed out in her talks and books.