YOU SAID:
today is going to be an absolutely wonderful day for me
INTO JAPANESE
今日は私にとって本当に素晴らしい日になるでしょう
BACK INTO ENGLISH
today is going to be a really great day for me
INTO JAPANESE
今日は私にとって本当に素晴らしい日になるだろう
BACK INTO ENGLISH
today is going to be a really great day for me
You've done this before, haven't you.