Never, ever give up your US citizenship. It is one of the most valuable things in the world, inside or outside the United States. I don't think that will change for at least 25 years, due to inertia if nothing else.
If you don't speak Japanese then it isn't easy to get a job in Japan. But, anything is possible. I've talked with many people that moved to Japan and they often found it to be a cold and isolating place after they outgrew the "cute American boy" look and role. You can count on doing most stuff in Japanese in Japan. I have a friend that came to the US and learned a lot of English, and she works as a liaison between her Japanese coworkers and their foreign business partners. Other than that kind of job, everything is Japanese, and Japanese people are much less willing to try to speak to you in English than the natives of other countries in my experience. Anyway, Speaking Japanese is not hard but it takes a long time to read and write. If you save up some money you can take an intensive course for a year and you will be more than good for getting a job that doesn't require too much reading, assuming you have a US degree already.
Anyway, you can go anywhere and do anything. But, there are few places in the world where you can go and do anything easier than you can in the US. When I left, I thought it was great at first; in the end I was making plans to bring my new friends back here with me so they would have more opportunities and a fairer chance at a good life. Becoming a foreigner in another country doesn't increase your freedom whatsoever; you are staying in their country at their pleasure, and you have very little leverage in any situation.
Regardless of where you go, it really helps to have a lot of money relative to those around you. Stick around a little bit and make a nice pile of money to take with you, if you don't have one already.
If you don't speak Japanese then it isn't easy to get a job in Japan. But, anything is possible. I've talked with many people that moved to Japan and they often found it to be a cold and isolating place after they outgrew the "cute American boy" look and role. You can count on doing most stuff in Japanese in Japan. I have a friend that came to the US and learned a lot of English, and she works as a liaison between her Japanese coworkers and their foreign business partners. Other than that kind of job, everything is Japanese, and Japanese people are much less willing to try to speak to you in English than the natives of other countries in my experience. Anyway, Speaking Japanese is not hard but it takes a long time to read and write. If you save up some money you can take an intensive course for a year and you will be more than good for getting a job that doesn't require too much reading, assuming you have a US degree already.
Anyway, you can go anywhere and do anything. But, there are few places in the world where you can go and do anything easier than you can in the US. When I left, I thought it was great at first; in the end I was making plans to bring my new friends back here with me so they would have more opportunities and a fairer chance at a good life. Becoming a foreigner in another country doesn't increase your freedom whatsoever; you are staying in their country at their pleasure, and you have very little leverage in any situation.
Regardless of where you go, it really helps to have a lot of money relative to those around you. Stick around a little bit and make a nice pile of money to take with you, if you don't have one already.