I think it' s possible to live in a foreign country and completly adapt to it but I think that it will be very difficult. In first when you arrive in a foreign country you must understand what people say and it's not very easy!! So it will be difficult to speak with people! But it's the best to learn too ..
In second if you go alone, you will have no friend so you have to do all alone and make news friends!
You must know the new country and of course the new town you will be, so you have to learn hox to go to school or cinema..
If you in england for exemple, you must know that they absolutly don't live with in France.
Voilà un petit début j espere que tu compris ce que j ai voulu dire...au pire demande moi ! :))))