YOU SAID:

I believe my life does not have an ending

INTO JAPANESE

私の人生には終わりがないと思います

BACK INTO ENGLISH

I don't think my life has an end

INTO JAPANESE

私の人生に終わりはないと思います

BACK INTO ENGLISH

I don't think my life will end

INTO JAPANESE

私の人生は終わらないと思います

BACK INTO ENGLISH

I don't think my life will end