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.
Gratitude is the most fruitful way of deepening your consciousness that you are not an "accident", but a divine choice. It is important to realize how often we have had chances to be grateful and not have used them. When someone is kind to us, when an event turns out well, when a problem is solved, a relationship restored, a wound healed, these are very concrete reasons to offer thanks.
What fascinates me so much is that every time we decide to be grateful, it will be easier to see new things to be grateful for. Gratitude begets gratitude, just as love begets love.