Like sands through the hourglass
Impermanence is a fact of life. At least this 3D reality of being “human” at this particular moment in time anyway.
The smarter ones among us learn to use their awareness of it as fuel while sadly others, often either stay woefully blind to, or neurotically anxious of, time slipping away. Regardless, both cause stagnancy towards goals and a lack of peace in the process.
What advice would you give your great-grandchildren?
Every existentialist I know is forever conscious of themes of legacy. Why are they here? What will they leave behind? Does their life have meaning and purpose? How to share that with others?