A wise friend of mine told me this yesterday:
You are moving, life is moving, the universe is moving. Who you are today is vastly different than who you were yesterday. Our problems come when we try to make today like yesterday and tomorrow like today.
That made me think of the concept of post-traumatic growth (read about it some time back in “The Happiness Advantage” by Shawn Achor). The fact that growth—and another concept he calls “falling upwards”—come from undesirable experiences.