YOU SAID:
I will not think about what I have to do tomorrow
INTO JAPANESE
明日何をしなければならないか考えない
BACK INTO ENGLISH
I don't think what I have to do tomorrow
INTO JAPANESE
明日何をしなければならないかわからない
BACK INTO ENGLISH
I don't know what to do tomorrow
INTO JAPANESE
私どうしたらいいのか
BACK INTO ENGLISH
I don't know what to do
INTO JAPANESE
私どうしたらいいのか
BACK INTO ENGLISH
I don't know what to do
That didn't even make that much sense in English.