Block time: how to reserve time for yourself in your calendar

The weekend arrives and you feel like you worked nonstop, yet the important things (balancing the books, replying to suppliers, planning the month) still aren't done. Why? Because your calendar was full of customer appointments and you never set aside a single slot for yourself. The urgent ate the important, as always.

The fix has a name: time blocking. It's a simple technique of reserving blocks in your calendar for specific tasks, just like you reserve an hour for a customer. The difference is that here the customer is you and your business. Let's look at how and why it works.

Why your brain needs blocks, not crumbs

The number one enemy of focus is constant task switching. The research Reclaim cites notes that switching between tasks can consume up to 40 percent of your productive time. Every time you drop something half-done to handle another thing, you pay a startup cost when you return.

That's why crumbs of time don't work for the work that takes thought. Studies on focus indicate the brain can sustain deep concentration for about 90 minutes before needing a break. A protected block gives you that space; five minutes between appointments does not.

What isn't on your calendar doesn't exist. If you don't reserve time for the important, someone else will fill it with the urgent.

What the evidence says

This isn't just intuition. In a 2023 study, 89 office workers were given software that protected blocks on their calendars. Compared to a control group, those with protected blocks worked less after hours, stayed more focused during their focus sessions, and reported feeling more productive.

The practical recommendation from the research is clear: set aside blocks of at least 90 minutes for work that requires thinking, and leave 10 to 20 percent of your time as free buffer for the unexpected. Reserving time isn't rigidity; it's giving yourself permission to do what actually moves your business.

How to block time in practice

You don't need an expensive app. Your own appointment calendar works: just create 'appointments' with yourself and mark them as busy so no one (not even you) steps on them. The golden rule is to give them a concrete name.

• Put the most important thing first, in your best mental hour of the day (for many, the morning).
• Name the block by its deliverable: 'Close the month's books,' not 'work.'
• Mark the block as busy so nothing can be booked over it.
• Group similar tasks into one block instead of scattering them across the day.
• Leave buffer gaps between blocks for the surprises that always come.

Batch tasks and theme your days

Two techniques make this pay off more. The first is batching tasks: pull all the similar stuff (replying to messages, doing purchases, paperwork) into two or three windows in the day instead of having it scattered. The second is theming days: for example, Mondays for admin, Thursdays for supplier visits. That way you stop switching gears all the time.

For an appointment business, this can mean reserving Tuesday mornings for internal work and opening the calendar to customers the rest of the time. The customer will never see that slot as available, because to your system it's busy.

Protect the block like you'd protect an appointment

The mistake that ruins it all is treating your blocks as negotiable. If a customer asks for exactly that hour and you always give in, the block doesn't exist. The idea is to treat your own work with the same weight as a paid appointment: if you wouldn't move a customer, don't move your block.

This is where automating booking helps. If an assistant like Lidia handles customer requests over WhatsApp, your personal time blocks stay marked as busy and simply aren't offered. You protect yourself without having to say no over and over.

Takeaway

Time blocking is the difference between a business that reacts and one that moves forward. Set aside 90-minute blocks for what's important, give them a concrete name, mark them as busy, and protect them like a customer appointment. Leave a buffer for surprises and batch similar tasks. Reserving time for yourself isn't selfish: it's the only way the things that move your business stop being left for 'when there's a slot' that never comes.

Sources

• Reclaim — Time Blocking Guide — https://reclaim.ai/blog/time-blocking-guide
• Todoist — Time Blocking — https://www.todoist.com/productivity-methods/time-blocking
• Atlassian — How to make time for the work that matters — https://www.atlassian.com/blog/distributed-work/calendar-redesign-experiment
• Worxbee — Strategies to Protect Your Calendar for Deep Work — https://worxbee.com/articles/5-strategies-to-protect-your-calendar-for-deep-work