Job 7:1 Is there not an appointed time to man upon earth? Are not his days also like the days of an hireling?
Job knows that his life is not in his hands. He knows that God gives us life and a limited life at that. Job understands that he is not in charge but God is.
We want to be careful to realize that God is the almighty, the all powerful king of the universe. We are His servants. We want the right attitude towards Him and all that He is doing.
It helps if you understand that in this life you are living for someone else. It helps if you realize how small you are and how large and great He is!