YOU SAID:

can't enjoy doing anything, can't enjoy doing nothing

INTO JAPANESE

何もして楽しむことができない、何もしないことも楽しむことができない

BACK INTO ENGLISH

I can't enjoy doing anything, and I can't enjoy doing nothing either.

INTO JAPANESE

何をしても楽しめないし、何もしないのも楽しめない。

BACK INTO ENGLISH

I don't enjoy doing anything, and I don't enjoy doing nothing either.

INTO JAPANESE

私は何かをするのも楽しくないし、何もしないのも楽しくない。

BACK INTO ENGLISH

I don't enjoy doing anything, and I don't enjoy doing nothing either.