Death comes to us all sonner or later.
About all we can do is try to leave the place better than we found it.
Our lives, be they huge or be they small, have a butterfly effect on history.
Perhaps you were a great general whose action obviously changed history.
Perhaps you were just a person with a kind word for somebody who needed it.
That also changed history...just not as obviously
Just do what you can, given what you have, and leave it to GOD to work it out the details in the long run.