it is not so easy , it takes time , but make sure when go to an other country , you have someone there a friend , a boyfriend ... that's helps a lot , because if you go alone , that will be so hard , to understand the new culture and the new language and the new life style

You can't control your life in ANY country. Not even China.

No you can't because you will have to understand and live in a new culture. Most countries have large Chinese communities who can help you adjust. You will feel isolated if you don't speak the language.

Do you mean "manage"? It will depend mainly on your funds, but more importantly on your contacts in the new country. It's a good experience, but don't expect to feel comfortable immediately. Be prepared for some culture shock (it's often surprising where the shock comes from).