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  • You can either go to bed satisfied with your efforts today or stressed with what you left for tomorrow. You can either work hard to take on the hill or never know what it is that people see at the top.

    Joe De Sena, Jeff O'Connell (2014). “Spartan Up!: A Take-No-Prisoners Guide to Overcoming Obstacles and Achieving Peak Performance in Life”, p.96, Houghton Mifflin Harcourt