IF YOU HAVE TALENTS DON'T GIVE UP! Life is what you make it! It's not true that Japanese are so much against gaijins. Gaijin is more suitable term for a tourist, a person who stays in Japan only for a while.
The ones who don't speak well the language, the ones who don't know well the culture, the ones who make troubles, the ones who don't OBEY their laws - they are all gaijins.
But if you think like a japanese, if you act like a japanese then you'll soon get used to them and they'll get used to you. If you're really talanted, even better than them they'll respect you. maybe some will be envy but that's common all over the world. So my advise is "Don't give up! At least try!"