To Get Things Done, Know Your Metric

The key to productivity isn’t saving time—it’s measuring it

Photo: artur carvalho/Getty Images

Have you ever had one of those days where you feel super accomplished but then you look back and see that you have done … not a lot? Or, conversely, you chastise yourself at the end of the day for being unproductive, but when you write down the things you have achieved, you’re actually pretty proud of…