The Magic of Doing One Thing Well 

Or: "Multi-tasking: Threat, or Menace?" Tony Schwartz writes:

What we've lost, above all, are stopping points, finish lines and boundaries. Technology has blurred them beyond recognition. Wherever we go, our work follows us, on our digital devices, ever insistent and intrusive. It's like an itch we can't resist scratching, even though scratching invariably makes it worse.