Unrepeatable Accidents!
I stole this idea from someone else. Think of your life as if it's "evolution" - a process of growth and development. But think of it all as a series of unrepeatable accidents. A long chain of improbabilities. That's you. That's your life. Unique, unrepeatable, improbable. A series of "mistakes," where there really are no mistakes, just a long, unbroken line of things that happened. You can't plan it. You can't regret it. You just live it.