YOU SAID:

I couldn't see what was right in front of me this whole time.

INTO JAPANESE

私はこの間私の前で何が正しかったかを見ることができませんでした。

BACK INTO ENGLISH

I could not see what was right in front of me during this time.

INTO JAPANESE

私はこの間に私の前で何が正しかったかを見ることができませんでした。

BACK INTO ENGLISH

I could not see what was right in front of me during this time.