Life and death
I've always believed that in this lifetime, we have many lives to live. If you are reading this, you probably have experienced a few 'mini-deaths' so far.
The ‘baby-you’ died a long time ago. The ‘teenage-you’ died too. You only have memories of them. One cycle ends, and another begins.
Each cycle of your new life eventually comes to an end.
The point isn't to hold tightly to that cycle. Rather, cherish and build the experiences intentionally - knowing that we will reap the dividends of that moment long after those experiences are over.