first of all...  don't be so afraid or confused about your future...

it sounds like you've been prepared for it and you're quite confident about what you've done so far^^

you have said that you're all prepared and you speak the language... 

that must mean your english is fluent and you're secure financially...

if you don't have these, you must have a very strong will and determined mind to overcome

all the obsticles living other country....

however, I have a feeling that you've been doing alot of research but no real life experience..

guess you don't have any experiences in living in overseas...

it is not so hard to fit in and make another country your home if you do have what you said you already have....

homesick is something like a flu, the symptoms are vary from people to people...

people who regret their migration are often those who came overseas for their vanity.

it is not really that fancy living in another country and obviously the people here aren't movie stars either.  it is just the same as our neighborhood with people with different colours who speak different languages.  everyone living outside their home countries has reasons.

sometimes no matter how strong your will is you'll face difficult times that make you to surrender yourself to your problems....  

consider yourself .....  isn't that what you're facing now?

it is not where you're living in or what language you're speaking...   it is you and your problem solving skills and how much you're in control of yourself and your life....   

alot of people want to make very lame excuses about their unhappy and troubled situation

as if they are too overwhelming or way too big to control....  and these people love to blame the economic crisis in asian countries which caused this catastrophic financial situation in Korea or corrupted politicians or poor support from their families...  and their only wish is to

go abroad and become a cinderella ...

if you are one of them, it wouldn't be a good idea to come to other country.  because it would never make you happy or help you to suceed in you future. 

if you're reassuring yourself about the decision you're about to make so you can avoid making a possible terrible mistake in your life, please think very careful.

it is you who have to pay for your decisions and acts.

And....  the most important thing....   if you are not acting by your vanity..... consider your financial status as well.......  because living outside your home country is costy!!!