YOU SAID:
I'm going to be happy
INTO JAPANESE
幸せになるよ
BACK INTO ENGLISH
you'll be happy
INTO JAPANESE
あなたは幸せになるでしょう
BACK INTO ENGLISH
you will be happy
INTO JAPANESE
あなたは幸せになるでしょう
BACK INTO ENGLISH
you will be happy
That didn't even make that much sense in English.