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by Andrey Sergeyev

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Why time blocking doesn’t work

April 23, 2026
Andrey Sergeyev
7 minutes

“Time blocking doesn’t work for me.”

I hear this from some leaders and executives constantly. Yes, it might not work.

But every time, I also think the same thing: it’s not time blocking that doesn’t work. It’s how you’re doing it.

I’ve been using time blocking for decades – across demanding corporate roles, building my business, and raising a family. I can tell you with confidence: it is one of the most powerful approaches to planning your time. I have also witnessed it working successfully in the lives of many other people.

But mastering it is a skill. And it’s a skill nobody ever taught us.

Today I want to cover both – why it fails for many leaders, and how to make it work.

What it is and why it is effective

A time block is a pre-established amount of time scheduled into your day to allow uninterrupted, focused work to be accomplished.

Simple concept. Powerful in practice – when done right.

Here is why it is effective:

  • Enough time to complete important work. Leaders often don’t achieve results at the required level of quality simply because they don’t plan in enough time. They usually fill the day with too many things, breaking it into smaller, less effective periods.
  • Improved focus and quality. To think clearly, solve complex problems creatively, or make good decisions, you often need a larger block of uninterrupted time. Without distractions, your mind stays focused – which leads to faster completion and better quality.
  • Less stress. By scheduling blocks of time in advance, you make steady daily progress on your highest priorities instead of procrastinating, firefighting or stressing at the last minute.

Why it fails

So why do many leaders say it doesn’t work?

Because most are falling into one or more of these patterns – without realising it.

Pattern 1: You block time but don’t protect it

This is the most common one.

The block goes into the calendar. Then a meeting request arrives. Your team needs a decision. Something urgent comes up. And the block moves. Then it moves again. Eventually it disappears.

Sign to watch: Your time blocks are planned at the start of the week – but you can’t remember the last time you actually used one without interruption.

Time blocking only works when the block is treated with the same respect as a board meeting or any other important meeting. If you don’t protect it, nobody else will.

Pattern 2: You try to block every minute

You see gaps in your calendar and fill them. More blocked time should mean more done, right?

But you’re underestimating how long things actually take. You’re assuming your energy and focus will be consistent across the entire day. And you’re leaving zero room for the unexpected – which always happens.

Sign to watch: One delayed call or overrunning meeting sends your entire day into a domino effect of stress and catch-up.

Effective time blocking is not about filling every gap. It’s about protecting the right time for the right work – with space to breathe in the midst of a demanding day.

Pattern 3: You’re using it as a to-do list with time stamps

You drag your entire task list into the calendar and believe you’ve planned your day.

But real effectiveness is not about doing more. It’s about eliminating what shouldn’t be done and protecting time for your must-dos only. Time blocking forces you to choose priorities – and that’s exactly what makes it uncomfortable, and exactly what makes it work.

Sign to watch: Your calendar looks full but you end the day without feeling you progressed on anything meaningful.

Pattern 4: You treat every day as if it will go exactly as planned

It won’t. It never does.

The unplanned request. The decision only you can make. The conversation that takes longer than expected. If your day has no room for the human needs and the unpredictable, you’ll spend more energy managing a broken plan than leading.

Sign to watch: The plan itself has become a source of frustration rather than clarity. Most days feel reactive, not intentional.

Your action this week

Here is how I implement time blocking – and how I recommend it to every leader I work with.

1. Divide your day into 3 major time blocks

I suggest you divide your day roughly into three:

Strategic time block.

This is the most important time of your day – and it needs to be protected and planned in every day. Start with one block of 1.5–2 hours. You will notice a difference right away, whether you are a CEO, a department head, or a team lead.

This is your thinking time – stepping back, reviewing priorities and the bigger picture. And also for working on your most important and complex challenges – the ones that require your full attention and best thinking.

This is not the time for email. Not for quick wins. Not for being available. Protect it like your most critical commitment.

Routine and administrative tasks.

There are many tasks that don’t require strategic thinking but still demand time – emails, calls, reports, updates. Group similar activities together. You are several times more effective when you focus on one type of work rather than switching between different types. Schedule these for the part of the day when your energy naturally dips.

Meetings.

If you absolutely have to have a meeting, try to schedule several close together – late morning or late afternoon. It allows you to stay focused without breaking your day into smaller, less effective pieces. One isolated meeting dropped into the middle of your morning can cost you far more than the meeting itself.

2. Start each day with your Strategic time block

This is your most important time period. Start your day with it (possible for majority of people) or plan it later in the day when your energy and cognitive abilities at the highest.

Find a place where nothing and nobody can distract you. From my experience as a CEO, usually there are very rarely situations so urgent they cannot wait two hours. And if your team is well-led, they are not waiting for you to solve every problem the moment it appears.

John Reed, the former CEO of Citigroup, kept his office door closed from 7am to 10am every day – no calls, no visits, no exceptions.

Once you finish your Strategic time block, you can move on to everything else and feel you’ve had a good day. Because the most important things are already done. Everything else is a bonus.

3. Build in buffer time — and treat it as non-negotiable

Schedule around 30 minutes of flexibility time after each block or every couple of hours. This is not wasted time. It is what keeps your day from collapsing when the unexpected happens – and it will happen. One break in the chain creates a domino effect of stress. Buffer time is what absorbs it.

Also plan something you enjoy between blocks – a real lunch, a short walk, time away from screens. Your mind needs to switch off in order to switch back on.

Leaders who skip this don’t get more done. They get less done – slower and with less clarity.

One last thing.

Your calendar reflects your true priorities. Not the ones you say you have. The ones you actually live.

If you look at this week and don’t see a protected Strategic time block every day – that’s your signal. Not that time blocking doesn’t work. That it hasn’t been given the chance to.

Try it tomorrow. Block 1.5 hours and protect it.

Then see how different the rest of the day feels.

Have you tried this approach already? Send me a short message what’s working for you and what’s not with this approach. I’d love to hear from you and help.

Have a meaningful day!

Cheers, Andrey Sergeyev

For short ideas on leading, living and scaling business with focus on what matters – follow me on Linkedin


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