Every tick of the clock brings you closer to your date with death. There is no way to stop time. Whereas ye know not what shall be on the morrow. It is even a vapour, that appeareth for a little time, and then vanisheth away. You cannot change it.
Death is so final.
There are no reruns. You don't come back for another chance. All is over, as far as this life is concerned. At you last heart beat, you leave your body and go out into eternity. If you are a lost sinner, you will go to Hell.