Stop Multitasking: The Case for Doing One Thing at a Time

Multitasking has a great reputation and a terrible track record. We admire the person who answers emails during a call while glancing at a report, as if juggling three things at once were a sign of competence. But the research and, more importantly, your own experience tell a different story. What feels like doing several things at once is really your brain rapidly switching between them, and every switch has a cost.

The human brain doesn't truly run two demanding tasks in parallel. It toggles. Each toggle burns a little attention and a little time, and the residue of the task you left behind lingers in your mind. Do this all day and you end up tired, scattered, and strangely unproductive, having worked hard without finishing much.

Why Multitasking Feels Productive but Isn't

Part of the problem is that multitasking gives you a constant hit of stimulation. Checking a message while writing a report feels like progress on both fronts. But the report gets your divided attention, which means more errors, weaker thinking, and a need to redo work later. The message gets a rushed reply that may cause a follow-up. You've created more work, not less.

There's also a self-deception at play. When you're switching rapidly, you feel busy and engaged, and busy feels good. But busy is not the same as effective. The person who writes one solid document in a focused hour has done more than the person who touched five things and finished none.

Errors are another hidden tax. Divided attention is exactly when mistakes happen, the kind that slip through and surface later as rework, apologies, or a meeting that has to be redone. The cost of a mistake usually dwarfs the time you thought you saved by juggling.

How to Practice Single-Tasking

The shift starts with a decision: one thing at a time. When you sit down to write, write. When you're in a meeting, be in the meeting. When you're replying to messages, reply to messages and nothing else. It sounds almost too simple, but it's genuinely hard at first because the habit of switching is so deeply wired.

Make it easier by removing temptation. Put your phone out of reach, close the tabs you don't need, and turn off notifications during focused work. You can't resist a distraction that isn't there. If a thought about another task pops up, write it on a capture list and return to what you were doing. That way you don't lose the thought and you don't lose your focus either.

Batch similar tasks together. Answer all your messages in one window instead of dribbling them out all day. Group your errands, your admin, your calls. Batching reduces the number of switches and lets your brain settle into each mode.

Expect it to feel slower at first. Single-tasking can feel almost boring when you're used to constant stimulation, and you may worry you're falling behind. Give it a week. The quality of your work goes up, the rework goes down, and the end-of-day fog starts to lift. You'll finish more by doing less at once, which is the quiet paradox at the heart of real productivity.