When is now? the writer asked, then answered himself, "Time is a lot like a string. Your now is like a bead that is always gliding along that string and the gliding never stops. That means every single chunk of now is an ending of something and a beginning of something else. Everything all the time is now. Yet as soon as you begin the merest thought of now, it is already in the past. Everything is connected, including the way time flows."
As a child, you think your life is fixed and reliable, yet as you grow you find that the only constant in life is change itself. Your parents grow old and die, then you become the ones that children look up to, and the children themselves become adults, responsible for making their own decisions in life. Even my 20-something son notices how quickly time seems to go now.
One of our dear friends has been diagnosed with cancer, and his prognosis is not good. Other friends have been ill, but none of them affected me as much as this. Then I got a letter from a college roommate who is fighting breast cancer. I don't know if my distress is for their suffering and the loss their families feel, or my recognition of my own mortality. This could happen to us just as easily as anyone else we know.
Seize the day, live for the now. Enjoy the sunrise and sunset, the birdsong at dawn. Tell someone you love them. Now is all we have really.