This is my life

— You’re in the driver’s seat of your life.
— Say whaaat?
In Full Metal Jacket the marines recite a creed about their rifle. It works just as well for the one thing you really have to master.
This is my life. There are many like it, but this one is mine.
My rifle is my best friend. It is my life. I must master it as I must master my life. Without me, my rifle is useless. Without my rifle, I am useless. I must fire my rifle true.
Swap the rifle for your life and read it again. This one is yours. No one else gets this one. Master it, aim true, and don’t waste a single round.
If you haven’t figured out that you only get one life, life will keep dropping hints.