Every stretch of time, whether an inch or a foot, is priceless. Life is made of these units, and each is an opportunity for mindfulness.
Not twice this day
Inch time, foot gem.
This day will not come again.
Each minute is worth a priceless gem.
Response of Takuan, 1573 – 1645, Zen teacher, when asked by a lord who asked how should we “pass the time.”
Mindfulbalance 
Every day I read these and they are reminders and little guideposts to peace. Thank you.
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What if we are reborn to repeat this life? That was what Ouspensky seemed to think (e.g. The Strange Life of Ivan Osokin).