YOU SAID:

growing up is not the problem forgetting is

INTO JAPANESE

大人になるのは忘れることの問題ではない

BACK INTO ENGLISH

It's not a matter of forgetting to grow up.

INTO JAPANESE

大人になるのを忘れる事は問題ではない。

BACK INTO ENGLISH

It doesn't matter to forget to grow up.

INTO JAPANESE

大人になるのを忘れることは問題ではない。

BACK INTO ENGLISH

It doesn't matter to forget to grow up.