This chapter traces the history of the essay against the backdrop of changing theories of distraction in the long eighteenth century. As the population of urban centres grew, readers’ seemingly waning attention spans had to counter a barrage of auditory and visual stimuli. Everyday diversions were compounded by literary ones: falling paper costs led to an explosion of print material, forcing the periodical essay to compete with a dizzying array of prose fiction, poems, sermons, and histories. Focusing on a series of prominent eighteenth-century and Romantic essayists, particularly Samuel Johnson, Leigh Hunt, and Charles Lamb, we argue that the essay form is powerfully shaped by its engagement with the wandering mind. Debates over distraction that began in the Enlightenment continue to shape the genre today, as modern essay forms – New York Times essays, blogs, Twitter feeds – continue to structure themselves around assumptions about short attention spans.