YOU SAID:

There is nothing that I want to do right now.

INTO JAPANESE

今したいことは何もない。

BACK INTO ENGLISH

There is nothing I want to do now.

INTO JAPANESE

今やりたいことは何もない。

BACK INTO ENGLISH

I have nothing to do now.

INTO JAPANESE

今、私は何もすることがない。

BACK INTO ENGLISH

I have nothing to do now.