The Cost of Context Switching

The summer my dog Sprocket was a puppy, I was driving home on a hot day, and he was in a crate in the back seat. I got worried he was too warm, so I decided to hand him some water... While pulling through a Starbucks drive-thru.

Somewhere in that little cluster of "I've got this," I lost my credit card. In my own car. I never found it. New card, new number, the whole thing.

It was a small, almost funny moment. But it stuck with me, because it is the perfect miniature of something I watch happen inside organizations every single week. The cost of context switching feels invisible right up until it isn't. And by the time you see the cost, the card is already gone.

I want to talk about why multitasking is hurting your productivity, and more importantly, your leadership team's productivity, and what to do instead. Because the truth is, this is not a discipline problem. It is a design problem. And design problems get solved with systems, not willpower.

Here is why we do it. We feel like we are going to get more done. Squeeze one more thing in between two other things.

Reply to that Slack message while half-listening on the call. Approve the budget line while walking into the next meeting. Pile more onto the plate, and surely more comes off the other end.

It is a total fallacy. Total.

When you multitask, two things happen. First, you get cognitive overload, which makes you do less smart things.

Like lose your credit card. Give feedback that isn't actually good. Say yes to a commitment your calendar cannot hold.

Second, every time you switch from one thing to another, you lose time. Not a little time. A lot of time. Like more than 50% of your time! And that time compounds across your whole team, every day, quietly.

Go ahead and search "the cost of context switching" right now. You will find the famous charts. The headline version goes like this: once you are juggling around five different things, you can spend roughly 80% of your day just switching between them, and only about 20% actually doing the work.

Now, that number is a bit of an oversimplification, and I want to be honest about that, because the details make the point sharper, not softer.

Researchers have tested more specific scenarios. What happens when you switch from something you know well to something you do not know how to do? It takes much longer to transition into the unfamiliar task. And here is the counterintuitive one: switching between two routine tasks you both know well can actually take longer than switching between non-routine tasks you also know well.

There are intricacies. But the main thing you need to hold onto is simple. You are not losing a sliver of your day to switching. You are losing a serious chunk of it.

So let me ask the question the way I ask it in the mirror: Do you want to lose most of your day to switching between tasks? Because that is what is on the table. No, no, no.

Here is where it stops being about your credit card and starts being about your organization.

When you run an organization big enough to have a leadership team of three, four, or more people, your multitasking is not just your own tax. It is contagious. The way you work becomes the way the system works.

Watch how it spreads:

• You fire off a "quick question" to a director mid-project, and they context switch out of deep work to answer it.

• Your leadership meeting jumps across six unrelated topics in forty minutes, and everyone leaves frazzled and half-decided on all six.

• Your team sees you rewarding the person who juggles fifteen things at once, so they start juggling too, to look valuable.

None of this is a motivation failure. Your people are not undisciplined. They are responding rationally to the system they are standing in. If the environment rewards switching, you will get switching. If the environment protects focus, you will get focus.

That is the shift I want you to make. Stop asking your team to try harder to concentrate. Start asking whether your organization is designed to make focus possible in the first place.

There is a second bill that comes due, and it does not show up on any productivity chart.

All that switching takes a toll on your brain and on your mental and emotional state. You feel frazzled. Frustrated. Scattered.

And then you try to go home and be present with the people you love, and you cannot, because your nervous system is still bouncing between eleven open loops.

When you and your leaders work one thing at a time, you get that back. You get the calm back. You get the capacity to actually be in the room you are in. This is not a soft benefit. A regulated, clear-headed leadership team makes better decisions, and better decisions are the whole game.

So what do we do instead? We pick the thing we are going to do, we do it to completion, and then we move on to the next thing. The amazing part is what happens when you actually run this way: you get dramatically more done, and you feel better doing it.

But "just focus on one thing" is advice, not a system. A system can bake focus into practice. A good system makes focus hold under pressure when you need it most. So here is how I actually make single-tasking the default in my own business, and how I coach leadership teams to do it. Two moves.

Get everything out of your head and into a visual flow. This can be literal sticky notes or cards on a wall. It can be a tool. I use Zenkit, but Trello works, and honestly most tools have a Kanban view now.

Set up three simple columns:

• Next up. What is coming, not started yet.

• In progress. What is genuinely being worked on right now, this day, this week.

• Done. What is finished and off the plate.

Here is the discipline that makes it work. You are managing flow-through, not filling up. The "in progress" column is not a wish list. It is a strict limit. Most teams fail here because they treat "in progress" like a parking lot and let twelve things sit in it at once. That is just multitasking with nicer labels. The point is to move things across, not to stack them up.

Some people work great with just the board. Finish one card, slide it over, pick up the next. If that is you, wonderful.

For me, and for most leaders running a real organization, that is not enough, because I cannot sit around all day focusing on one thing in a vacuum. I have meetings. My calendar is shaped by other people's schedules. So I take what needs to be in progress over the next two weeks, I break it into chunks, and I block those chunks around my meetings.

Is there still some context switching? Yes. It is inevitable when you lead a team. But now it is intentional and contained instead of constant and accidental. And more importantly, I have been honest with myself about how many things can actually get done in a day. That honesty is the whole point.

When your calendar reflects reality, you stop making promises your attention cannot keep.

If the idea of building your work around your calendar instead of an endless list is new to you, I go deeper on it in Escape the To-Do List Trap, and there is a podcast version in Stop Using To-Do Lists if you would rather listen.

One thing I want to be clear about. You do not solve this once and coast. Focus drifts. It is not a fixed trait you either have or lack. It is something you notice slipping and reset, over and over. I wrote about why that matters in Focus Isn't a One-Time Thing, because leaders beat themselves up when their focus wanders, as if it is a character flaw. It is not. It is normal. The system exists precisely so you have something to reset to.

And when everything feels urgent at once, remember you still only get to fully solve one problem at a time. That is not a limitation. It is how progress actually happens. I make the case for that in Focus Is Not Optional.

There is a bigger reason I care about this so much. When you are the visionary at the top and you are constantly switching, you never get the long, quiet stretches of thinking that vision actually requires. You stay stuck in operations, reacting, and the organization plateaus with you. I unpack that trap in Operator or CEO.

At the end of the day, protecting focus is how you protect your capacity to lead. Not your to-do list. Your leadership.

So here is what I want you to do. Stop for a moment and picture your next two weeks. Not as a pile of forty open tabs, but as a small set of clear things, one at a time, moving steadily across the board to done. Picture your leadership team working the same way. Calmer. Sharper. Actually finishing things.

That is not a fantasy. That is what the system produces. Pick your one thing. Start there.