To be grateful for the good things that happen in our lives is easy, but to be grateful for all our lives—the good as well as the bad, the moments of joy as well as the moments of sorrow, the successes as well as the failures, the rewards as well as the rejections—that requires hard spiritual work. Still, we are only truly grateful people when we can say thank you to all that has brought us to the present moment.
There's a thread you follow. It goes among things that change. But it doesn't change. People wonder about what you are pursuing. You have to explain about the thread. But it is hard for others to see. While you hold it you can't get lost. Tragedies happen; people get hurt or die; and you suffer and get old. Nothing you do can stop time's unfolding. You don't ever let go of the thread.