Can you think of some ways you've witnessed the passage of time and how it makes you feel

I have a jailbird cousin. One time I looked online at his plethora of mugshots. It was like a scientific study of age progression. His receding hairline, the texture of his skin, the expression of his eyes even.

I pause when I view things dilapidated by time and tide. Old structures and the like. It is a sobering experience for me, to consider how little time we have.