YOU SAID:

There are times when I didn't believe I was still alive.

INTO JAPANESE

まだ生きているとは思わなかったことがあります。

BACK INTO ENGLISH

I have never thought that I was alive.

INTO JAPANESE

私は生きていると思ったことは一度もない。

BACK INTO ENGLISH

I have never thought of being alive.

INTO JAPANESE

私は生きていることを考えたことがない。

BACK INTO ENGLISH

I have never thought of being alive.