YOU SAID:
I'm going to try to be happy
INTO JAPANESE
私は幸せになろうとするつもりです
BACK INTO ENGLISH
I am going to be happy
INTO JAPANESE
私は幸せになるだろう
BACK INTO ENGLISH
I will be happy
INTO JAPANESE
私は幸せになります
BACK INTO ENGLISH
I will be happy
That didn't even make that much sense in English.