“Manage your energy, not your time.” This is the quote that made Tony Schwartz famous. And it’s one that I believe best represents a truly efficient lifestyle in the 21st century. Yet, living “manage your energy, not your time” is incredibly hard, at least for me. It probably took me around a year to fully grasp its meaning. Since then, I’ve turned my life upside down and changed my routine dramatically.

~ Leo Widrich from, http://lifehacker.com/5992541/the-four-elements-of-physical-energy-and-how-to-master-them

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