Like so many of us, Johann Hari was finding it much harder to focus than he used to. He found that a life of constantly switching from device to device, from tab to tab, is diminishing and depressing. He tried all sorts of self-help solutions--even abandoning his phone for three months--but in the long-term, nothing seemed to work. So Hari went on an epic journey across the world to interview the leading experts on human attention and to study their scientific findings--and learned that everything we think we know about this crisis is wrong.