https://www.theguardian.com/technology/2016/dec/22/why-time-management-is-ruining-our-lives 

You can seek to impose order on your inbox all you like – but eventually you’ll need to confront the fact that the deluge of messages, and the urge you feel to get them all dealt with, aren’t really about technology. They’re manifestations of larger, more personal dilemmas. Which paths will you pursue, and which will you abandon? Which relationships will you prioritise, during your shockingly limited lifespan, and who will you resign yourself to disappointing? What matters?

For Merlin Mann, consciously confronting these questions was a matter of realising that people would always be making more claims on his time – worthy claims, too, for the most part – than it would be possible for him to meet. And that even the best, most efficient system for managing the emails they sent him was never going to provide a solution to that. “Eventually, I realised something,” he told me. “Email is not a technical problem. It’s a people problem. And you can’t fix people.”

How to Invest in Yourself