You've probably been told that the secret to getting more done is better time management. More structure, smarter systems, tighter schedules. And while that's not wrong, most founders hit a wall long before any of that kicks in.

Because the real problem isn't how they're spending their time. It's how much of it they're trying to cram in at once.

Multitasking has become the default mode for a huge number of founders. And it's easy to see why. If you can't find more time, you might as well make better use of the time you have, right?

It makes sense in theory. In practice, though, it tends to create more problems than it solves.

Why do founders default to multitasking in the first place?

It's rarely intentional. It's reactive.

Most small business owners are already spending a huge amount of time at work, anywhere from 16% to 74% more than the average person. So when the demands of your to-do list outnumber the time you have to do it all, multitasking feels like the only way to keep up. You answer emails during meetings. You jump between projects. You respond instantly.

It creates the illusion of control.

But beneath those surface-level feelings of productivity and progress, what’s happening in your brain tells a different story.

Five reasons why multitasking backfires

At first glance, the ability to juggle several tasks at once and get twice as much done in half the time sounds like a pretty great skill to have. That is, if it were actually possible.

But here's what the research tells us: multitasking, as most of us understand it, is a myth.

We're not actually doing more than one thing at a time. We're rapidly switching from one task to another, repeatedly.

And even if you think you're a multitasking master, unfortunately, the data doesn't quite back that up. According to researchers at the University of Utah, those who believe they can multitask well are not good at it in reality. The University of Utah also found that only 2.5% of people may actually be able to multitask effectively.

So for the other 97.5% of us, this means the costs of multitasking are real, even if it doesn't feel that way in the moment.

Here are five ways it's working against you.

1. Multitasking can waste almost half of your productive time

Every time you switch from one task to another, your brain needs a moment to reorient. It has to let go of the first task's context, load up the new one, and figure out where you left off. These transitions happen so quickly you barely notice them, but they add up fast.

According to researchers, these brief mental blocks can eat up to 40% of your productive time. If you're working a ten-hour day and spending it multitasking, you could be losing four hours to nothing but the friction of switching gears.

That's a massive productivity leak.

2. Multitasking affects the quality of your work

It's not just the quantity of work that takes a hit, but the quality, too. Multitasking makes you worse at what you're doing while you're doing it.

Multitasking during cognitive tasks can reduce IQ by up to 15 points, which is the same as if you were running on zero hours of sleep the night before. You miss details. You make mistakes that you wouldn't normally make. You produce work that clears the bar but doesn't represent your best thinking.

And when you're a founder, the quality of your thinking matters more than almost anything else. The strategic decisions you make, the relationships you build, the direction you set for your business: all of these suffer when your attention is fractured across five things at once.

Devoting your full attention to a single task helps you focus and be more thorough in your work. You can do a better job of picking up on details that may have been missed if you had tried to multitask.

3. Multitasking impacts decision-making

This is where it gets particularly concerning for business owners.

Research from Stanford found that chronic multitaskers have trouble filtering out irrelevant information, even when they aren't actively multitasking. Their brains essentially get trained to pay attention to everything, which means they struggle to zero in on what actually matters. When everything feels like urgent tasks competing for your attention, nothing truly gets the focus it deserves.

In one experiment, frequent multitaskers were asked to write an analytical essay while snippets of information appeared on their screen. Half saw relevant information. Half saw irrelevant information. The multitaskers couldn't tell the difference. They let the irrelevant information seep into their work, and their essays were graded as significantly weaker.

As a founder, you're making dozens of decisions every day. You need to be able to separate what's urgent from what's just loud. Chronic multitasking erodes that ability over time, and you might not even realize it's happening.

See: How To Make Better Decisions As An Entrepreneur

4. Multitasking can fast-track burnout

It's easy to overlook how genuinely exhausting it is when you're constantly multitasking, even when the individual tasks are simple.

This is because, no matter how good we think we are at multitasking, trying to do multiple tasks at once triggers stress responses in our bodies. And it's no secret that stress can wreak havoc on the parts of the brain we need most.

The prefrontal cortex, which handles your highest-level thinking (reasoning, problem-solving, creativity, impulse control), is also the region most sensitive to stress. When stress hormones flood in, the prefrontal cortex weakens, and your cognitive abilities take a hit.

On top of that, your brain burns through its fuel (oxygenated glucose) every time it switches tasks. Constant switching drains those reserves so fast that you can feel mentally wiped out after just a few hours of work, even though you haven't accomplished that much.

This combination of chronic stress and rapid energy depletion is a steep, slippery slope that leads to burnout. And with an estimated 53% of business managers already reporting burnout symptoms, multitasking is the last thing you need adding to that.

See: 3 Warning Signs You're About To Burn Out As A Founder

5. Multitasking weakens memory and learning

When you're concentrating on one thing at a time, your short-term, long-term, and working memory all engage to pull up the experience and knowledge you need to do the job well. When you switch tasks, that entire process has to restart from scratch. This, again, causes mental blocks, leading to more mistakes made and slower completion times.

But the damage goes deeper than just slowing the process.

Researchers at Stanford found that when people tried to learn something while simultaneously doing another task, the information was stored in the wrong part of the brain. Instead of going to the hippocampus (where facts and ideas live), it went to the striatum (a region designed for habits and motor skills, like learning to ride a bike).

You're filing things in the wrong drawer, and wondering why you can't find them. For a founder who needs to remember client conversations, market insights, and strategic plans, that's a real problem.

What works instead: monotasking

Shifting away from multitasking is easier said than done, especially when it's become second nature.

But monotasking is a skill, and like most skills, it gets easier the more deliberately you practice it. Here's where to start.

List your priorities for the day

A long to-do list full of competing priorities is practically an invitation to multitask. When everything feels urgent, the temptation to tackle several things at once is hard to resist.

Instead, start each day by narrowing it down. What actually needs to happen today? What has a deadline, a consequence, or a direct impact on your goals? Give yourself a short, honest list, and let that be your anchor for the day.

Batch your tasks around your priorities

Once you know your priorities, group similar tasks and work through them in one go before moving on to something different. Emails with emails, calls with calls, creative work with creative work, and so on.

Staying on track is so much easier when you're not needlessly wasting your brain's fuel supplies jumping back and forth between different tasks and the different thought processes required for each. Batching keeps that cost low and your focus high.

Identify your peak performance hours

Most people have a window in the day when they're naturally sharper, more focused, and less easily pulled off track. The problem is, most people never stop to notice when theirs actually is.

Take a few days to pay attention to your own patterns. Do you do your best work early in the morning? Or do you come alive late afternoon?

Schedule time in your calendar for deep work

Knowing your peak hours is only useful if you actually defend them. Block out that time in your calendar as a real, recurring commitment to your priority tasks.

This also keeps you accountable. When deep work has a dedicated slot, it's much less likely to get quietly pushed aside by whatever feels most urgent in the moment.

These deep work sessions don't need to be long to be effective. Even 90 focused minutes on a single task will move things forward more than a fragmented morning of multitasking ever could.

See: How To Audit Your Week To Boost Productivity And Growth As A Business Owner

Reduce environmental friction

A lot of multitasking is driven by distraction, and a lot of distraction is driven by your environment.

Close the tabs you don't need. Silence notifications during focus time. Use website blockers if you need to. Set boundaries around your availability so that colleagues (and family, if you work from home) know when you're in the zone.

The easier you make it to stay on one task, the less tempting it becomes to drift.

See: How To Create The Ultimate ADHD-Friendly Work Zone

Offload the tasks that are forcing you to multitask

If you're reading all of this and thinking, Okay, I know multitasking is bad. But I literally can't stop because there's too much to do, that's a completely valid reaction.

The problem here isn't a lack of discipline or focus. If you're an overwhelmed business owner, you're operating in conditions that make monotasking feel impossible. The real reason you multitask is that there's genuinely too much on your plate for one person to handle sequentially. The math doesn't work. There are more tasks than hours, so you try to compress them by layering them on top of each other.

The only sustainable solution is to reduce the number of tasks that require your attention in the first place. That means finding certain tasks that can be delegated, outsourced, or automated: the scheduling meetings, the inbox management, the data entry, the social media posting, the follow-ups, the research, the formatting, all of it.

A virtual assistant (VA) can take those things off your plate entirely, giving you back the space to work on one thing at a time without feeling overwhelmed.

And when your workload is finally manageable, you'll find you can actually boost productivity without working longer hours. Doing fewer things with real focus produces better results than doing everything at once in a scattered haze.

See: 5 Tasks Every Founder Should Delegate To Save Time And Stress Less

What's the bottom line?

Multitasking makes sense on paper. When there's more to do than hours to do it, working on several things at once feels like the only option.

But the reality is fragmented work, slower progress, and a kind of mental fatigue that hits well before the day is done.

Monotasking takes some getting used to, especially if task-switching has become your default. But the payoff—clearer thinking, better output, steadier progress—shows up fast once you commit to it. Not because you've found more hours in the day, but because you've stopped wasting the ones you already have.

Ready to stop juggling and start focusing on what matters?

If the volume of work is what makes monotasking feel impossible, that's the real problem to solve.

At Time etc, we match founders with experienced virtual assistants who take the routine, time-consuming tasks off your plate so more focused hours can go toward the work that actually moves things forward.

Speak to our expert team to find out how we can help.

P.S. Want $150 off your first month of virtual assistant support? Answer a few quick questions to get personalized task recommendations and unlock your welcome discount.