We are finite, mortal. Our lives can be measured in seconds, minutes, hours. As the clock ticks, our lives diminish in length. This is a reality that few can face directly and consciously in every moment. The developed practice of doing this can lead to great peace and patience.
The wisdom of accepting the active death of every moment is this: Nothing is crucial or indispensable or irrevocable. In short, nothing is as precious as the present moment.
This is both a challenge and a relief. The challenge is to be, in each precious moment, a mindful, compassionate and evolving person. The relief comes with the acceptance of death as the inevitable equalizer of all things. Comprehension of these realities through practice brings great patience and peace.