A man can live for 20 years and the impact of those years is like he lived for a thousand years. His impact can travel throughout time because of the eternal covenants that he established with God.
It is not the longevity of your life that matters, but the quantum of life which powers your living.
How many years did Archbishop Benson Idahosa live? And what of Apostle Joseph Ayo Babalola?
These men did not live up to 70 years but moved greatly in the supernatural and the effect of their lives still shine through our generation because there was much life in their years.
You should rather pray that God would add more life to your years than pray that He adds more years to your life.
Press into the knowledge of God!