Do you think working abroad is essential for a successful career? Why (not)?

From my point of view, (I think) working abroad is actually (?) essential THESE DAYS / NOWADAYS, not just for a successful career, even for making yourself BECOMING a better person. TheRE ARE several reasons why this happens are . FIRSTLY, because you meet different and interesting people, so it gives you the chance to interact with them. Then, you can also visit new places and adapt yourself to a different culture, so it opens your mind, at least. Even, APART FROM THAT / FURTHERMORE, /WHAT IS MORE, you learn how to be more independent and how to manage by living on your own YOURSELF. And one of the most important thingS is that, of course, you put into practice a foreign language INTO PRACTICE. In short, all of these things will help you to become a great worker for any company. 

(?) I'M NOT SURE WHAT YOU MEANT, SO MAYBE I OVERCORRECTED YOU. SORRY IF I DID.