YOU SAID:

Don't be sad because it ended, be happy it happened.

INTO JAPANESE

終わってしまったからといって悲しむのではなく、終わって幸せになってください。

BACK INTO ENGLISH

Don't be sad when it's over, be happy when it's over.

INTO JAPANESE

終わっても悲しむな、終わったら喜ぶ。

BACK INTO ENGLISH

Don't be sad when it's over, be happy when it's over.