Nothing happens twice. Similar experiences happen again and again, yes. But, no two experiences are ever the same. Yet, you treat each of life's experiences like cookie-cutter commodities being churned out on a production belt.

Experiences don't work this way. Neither do you, the one experiencing the experiences. Heraclitus once wrote that no man ever steps in the same river twice because it's not the same river and he's not the same man. This is true for your life's experiences.

The Japanese have a saying: Ichigo Ichie. It means that what you are experiencing now will never happen again. It's a verbal recognition of the finite, allowing you (the speaker of the mantra) to hone your focus and attention until you are fully present in the experience in front of you.