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5 Reasons Why We Miss Deadlines (And How To Never Miss One Again)

Barnaby

Barnaby Lashbrooke

Founder and CEO of Time etc, author of The Hard Work Myth

11 minute read

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There are few things as stressful as watching a deadline approach and realizing you won’t finish on time. The feeling that you're going to let someone down, or knowing there’ll be repercussions for not completing on time, can be pretty debilitating.

But whether we like it or not, as entrepreneurs, deadlines are an unavoidable aspect of doing business with other people.

If we want to avoid missing deadlines, it is important to understand why this happens in the first place. Once we know the causes, we can take steps to prevent it from happening again and set ourselves up for future success.

Why should we avoid working under pressure?

Pressure can be a solid motivator for some people, but there are a number of downsides associated with working under these conditions.

When we’re rushing against the clock, we risk compromising the quality of our work just so we can get it done on time. It becomes a case of “That’ll do” instead of something we’re proud of. Rushing can also lead to a higher chance of making mistakes than if you had more time to be careful and considered in your task.

Lower quality aside, leaving important work until the 11th hour also runs the very real risk that you still won’t be able to complete it in time. This can have serious consequences, including negative reviews or feedback, losing out on opportunities with future clients or customers, and financial losses.

And not just your professional life, working under pressure can also lead to issues with your physical health. Stress can cause a whole host of problems in the body, such as increased susceptibility to colds and illnesses, migraines, and even heart attacks and strokes. This is another reason why it’s crucial to learn how to manage the stress of deadlines so that it doesn't take a toll on your body or your life.

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Why do we miss deadlines?

Now that we’ve covered the risks of rushing our work, let’s look at the five most common reasons deadlines are missed—and practical strategies to fix each one.

1. Planning

Let’s start with one of the biggest culprits behind missed deadlines and last-minute scrambles: poor planning.

We like to think we’ve got it all under control. We glance at a task and think, “Yeah, I’ve got this. Shouldn’t take long.” But in reality? Most of us are notoriously bad at estimating how much time something will actually take.

This very human error has a name: the planning fallacy. Coined by psychologists Daniel Kahneman and Amos Tversky, it describes our tendency to consistently underestimate how long a task will take—even if we’ve done that exact task before.

So why do we keep falling into this trap?

A big reason is something called optimism bias. It’s that inner voice that says, “This time will be different.”

  • This time, we’ll be more focused.
  • This time, we won’t hit any roadblocks.
  • This time, we’ll move through everything like a productivity ninja.

Spoiler alert: we probably won’t. Life happens. Distractions pop up. Tasks take unexpected turns. And that “quick 30-minute job”? Suddenly it’s eaten up half your afternoon.

The irony? Even when we know we’ve underestimated time in the past, we still do it again.

We plan poorly, overschedule ourselves, and then beat ourselves up when we can’t stick to a timeline that was unrealistic to begin with.

How to overcome the planning fallacy

  • Ask yourself: How long has this really taken before? Before you make a wild guess or set an ambitious deadline, pause and reflect. Think back to similar projects or tasks—how long did they actually take you (or your team)? Be brutally honest, even if the answer makes you wince. The past is your most reliable predictor, and using real data from your own experience can help you avoid over-promising and under-delivering.
  • Run a “premortem”: This technique flips traditional planning on its head. Imagine your project has completely derailed—what happened? Was there a delay in approvals? A tech hiccup? Someone out sick? Mapping out potential obstacles in advance gives you the power to plan for them before they become reality. Think of it as risk management with a proactive twist.
  • Schedule buffer time: No matter how well you plan, unexpected things pop up—surprise meetings, revision requests, tech issues, or just plain old fatigue. That’s why it’s wise to bake in some breathing room. Padding your schedule with a bit of extra time doesn’t mean you’re slacking—it means you’re smart. And if you finish early? That’s a win. But if things go sideways? You’ve got a safety net.

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2. Disorganization

It’s hard to meet a deadline when you’ve forgotten you had one in the first place!

Let’s be honest, life as a founder is full-on, and chaos often becomes the default setting for many of us.

The truth is, our brains are for having ideas, not for holding them. With so many things demanding your attention at once, it's all too easy for important information to get pushed straight out of your mind almost as soon as it lands in there.

Not only that, end up lost under piles of sticky notes or buried in overflowing inboxes.

The good news is that this may be one of the easiest problems to fix.

How to stop things from slipping through the cracks

  • Take advantage of technology: Luckily, there are hundreds of apps on the market for this exact purpose. You may be familiar with popular tools like Remember The Milk, Todoist, and Trello to name a few, but it’s worth shopping around to find the one that works best for you.
  • Keep one simple list: Whether it’s a Word document or a spreadsheet, create a list of all your deadlines in order of due date. Having everything in one place will help you avoid scribbled notes getting lost or important details getting buried within multiple notebooks, documents, or programs.
  • Go analog: For the more visual learners among us (*raises hand*), a simple list of dates doesn’t always help you gauge just how much time you have between now and your deadline. You may find it useful to have a physical, printed calendar in your workspace that you can quickly and easily refer to, and give you a clear visual understanding of just how many days or weeks are left between now and your deadline dates.

See: From Overwhelmed To Organized: How To Keep On Top Of Your Workload

3. Procrastination

Many people miss deadlines because they struggle to start in the first place.

We know the deadline is looming. We know the clock is ticking. And deep down, we know leaving it until the last minute will only make it worse. And yet… we still put it off.

Procrastination is often misunderstood among founders. It’s not because we’re lazy or that we don’t care about our work. In reality, it’s usually a signal—not a flaw. A signal that something deeper is going on.

Sometimes we’re afraid: afraid of failing, of not doing it perfectly, or of not living up to our own expectations.

Sometimes we’re mentally exhausted: too tired to focus, too drained to make decisions, too overwhelmed to even know where to begin.

And sometimes the task itself feels like a mountain: too big, too messy, or too stressful to tackle head-on.

So instead of starting, we sidestep. We scroll. We tidy our desks. We answer emails that could’ve waited. We tell ourselves, “I just need to feel a little more ready.”

But the longer we wait, the bigger the task feels—and the heavier it weighs in our minds. What once felt doable now feels impossible. And then, suddenly, it’s the night before the deadline. You’re staring down the clock, adrenaline pumping, stress levels through the roof, wondering why you waited so long to start.

How to stop putting things off

  • Break it down to build momentum: Who says a tough job has to be done all at once? For example, instead of “finish the entire presentation,” aim for something like “outline three main points” or “create the opening slide.” These mini-milestones feel more manageable and give you a clear place to start—plus, checking them off as you go gives you a little hit of motivation each time.
  • “Eat your frog”: Once you’ve broken things down, start your day by tackling the most important—or most dreaded—task first. Productivity expert Brian Tracy calls this strategy “Eat That Frog”, based on the idea that if you had to eat a live frog every morning, you’d at least get it over with and nothing worse would happen the rest of the day! In other words: don’t delay the task you’re most likely to avoid. Doing it first not only clears your mental clutter, but also sets a productive tone for the rest of your day.
  • Give yourself permission to start imperfectly: Perfectionism is one of procrastination’s closest friends. If you’re waiting for the “perfect” idea, the “perfect” time, or the “perfect” mood to strike, you might be waiting forever. Instead, give yourself permission to start messy. The goal is progress, not perfection.

See: 10 Tasks You're Probably Putting Off Right Now (And How To Finally Get Them Done)

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4. Unable to focus

Picture this: you sit down to start a task that should only take a few minutes, but somehow, hours later, you're still not done. Sound familiar?

There are a million reasons this might happen—stress, fatigue, lack of motivation—but one of the biggest culprits? Distractions. And not just the big, obvious ones. Even a tiny notification in the corner of your computer screen can fracture your focus and send your brain down a totally different track.

Every time your attention is pulled away, it takes time and mental energy to get it back. Research shows it can take up to 23 minutes to refocus after a single interruption. Multiply that by several distractions an hour, and it’s no wonder we end the day wondering where all the time went.

How to protect your focus against distractions

  • Identify your biggest distractions: Is it your phone? Email alerts? Background noise? Start by noticing where your attention leaks out the most. Once you know your triggers, you can create strategies to block them.
  • Control your environment: If your phone is your biggest temptation, switch it to "Do Not Disturb," “Focus” mode, or simply put it out of sight—like in a drawer or another room. (You’d be amazed how well "out of sight, out of mind" works.)
  • Minimize noise: If background noise or chatter breaks your concentration, noise-canceling headphones or even simple earplugs can be game-changers. Don’t underestimate the power of a quieter space to help you think more clearly.
  • Create “deep work” time blocks: Protect 1–2 hours of your day for uninterrupted, focused work. Shut your door. Silence notifications. Let others know you’re unavailable. This is your time to dive deep, get in the zone, and make real progress.

See: 5 Tips To Reset Your Attention Span In A World Full Of Distractions

5. Lack of time

And last—but definitely not least—we have the one struggle that nearly every business owner knows all too well.

You’ve got a to-do list a mile long, deadlines breathing down your neck, clients to respond to, finances to manage, content to create, meetings to attend... and somehow, the day just vanishes. It’s exhausting, and more often than not, you’re left wondering how you worked non-stop and still didn’t get to the really important stuff.

Let’s be real—you’re only one person. Running a business will always come with a full plate, but it doesn’t matter how capable or hardworking you are; there’s only so much you can physically do in a day. When your responsibilities start to outweigh your capacity, something’s got to give.

How to stop racing against the clock

  • Be ruthless with your role: We get it—you care deeply about your business, and it’s natural to want everything done a certain way. But the truth is, not all tasks are created equal. As the founder and leader of your business, your job isn’t to wear all the hats forever—it’s to wear the right ones.
  • Focus on your priorities as a founder: There are certain tasks that only you can do—ones that create opportunities and deliver real results. These are the things that absolutely need to get done and need to get done on time. If a task doesn’t directly contribute to those outcomes—and it’s stopping you from working on what does—it’s time to seriously rethink its place on your to-do list.
  • Offload everything else: Chances are, this will be all the back-office admin work that fills your day. Handing these tasks over doesn’t just create space for you to focus on your own important work, it also makes sure they are always completed consistently and on time. No more scrambling to finish them at the end of the day or letting them pile up in the background. You've got someone dedicated to getting them done right, every time.
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What’s the bottom line?

Founders have a lot of different balls to juggle, and sometimes it can be tough to keep everything in the air. Deadlines are one of those things that can easily slip through the cracks, especially if you’re trying to do too much at once.

But if you want your business to succeed, it’s important to make sure that deadlines are front and center in your mind, and you’re well-equipped with all the knowledge and know-how for how to meet them.

Want to feel in control of your work again?

At Time etc, we know that founders can only truly be at their best when they’re not drowning in a sea of tasks and deadlines.

That’s why, since 2007, we’ve helped over 22,000 founders get things done without the chaos. By pairing them with top-tier virtual assistants, we take care of the time-consuming admin tasks that cause stress and throw schedules off track.

The best part? We handle it all—from sourcing the best talent to managing the day-to-day details—so you don’t have to.

No hiring stress. No time wasted. Just reliable, personalized support that helps you stay on track—and up to 90% cheaper than traditional hiring.

So, ready to stop scrambling and start breathing easier? Chat with our expert team today, and we’ll take care of the rest.

P.S. Not sure where to start? Answer a few quick questions to get personalized task recommendations—plus $150 off your first month of virtual assistant support!

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About the author

Barnaby
Barnaby Lashbrooke is the founder and CEO of Virtual Assistant service Time etc as well as the author of The Hard Work Myth, recently recommended by Sir Richard Branson. Barnaby is a Forbes Columnist on productivity and is also an accomplished entrepreneur, selling more than $35 million worth of services.

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