The average human lifespan is absurdly, outrageously, insultingly brief: if you live to 80, you have about four thousand weeks on earth. How should we use them best? Of course, nobody needs telling that there isn't enough time. We're obsessed by our lengthening to-do lists, our overfilled inboxes, the struggle against distraction, and the sense that our attention spans are shrivelling. Yet we rarely make the conscious connection that these problems only trouble us in the first place thanks to t…Show more