Never offline, always within reach, we now wield in our hands a magic wand of technological power we have only begun to grasp. But it raises new enigmas, too. Never more connected, we seem to be growing more distant. Never more efficient, we have never been more distracted. Drawing from the insights of numerous thinkers, published studies, and his own research, writer Tony Reinke identifies twelve potent ways our smartphones have changed us—for good and bad. Reinke calls us to cultivate wise thinking and healthy habits in the digital age, encouraging us to maximize the many blessings, to avoid the various pitfalls, and to wisely wield the most powerful gadget of human connection ever unleashed.