YOU SAID:
I really believe I am a superior writer.
INTO JAPANESE
私は本当に私が優れた作家だと信じています。
BACK INTO ENGLISH
I truly believe that I am a great writer.
INTO JAPANESE
私は本当に私が偉大な作家だと信じています。
BACK INTO ENGLISH
I truly believe that I am a great writer.
That didn't even make that much sense in English.