Reasoning about life

But when I think about the future, I understand that I will never know what exactly I will leave behind. Maybe it will be something spiritual, some kind of tradition? Or maybe some beautiful house in which my future relatives will live for another 5 centuries, or even more. Maybe I will leave behind some kind of discovery? Will I become a great designer? Will I become a great actor or singer? Or will I die without leaving my mark? The unknown pulls me, this is the only meaning of life. How long will this last?