Welcome to Hyperfocus.

Here is what this is. Every Sunday, one email. One study, one tool, one habit, one challenge. Three minutes to read, then you're out.

I run a company, I'm doing a master's degree, and I record two hour work sessions on YouTube. Everything in this newsletter is something I use in a normal week. If it doesn't survive a normal week, it doesn't go in here.

Let's start with the most expensive habit almost everyone has.

ONE STUDY

Sophie Leroy, a researcher who studies how people switch between tasks, described something she called attention residue.

When you move from task A to task B, part of your attention stays behind on task A. You are now physically working on B, but you are running on reduced capacity, because a piece of your mind is still processing the thing you just left.

The part that matters for your work: the residue is worst when you leave the first task unfinished and undefined. Your brain keeps the loop open because it has nowhere to put it.

This is why the quick check is never quick. Opening Slack takes eight seconds. Reading the message takes twenty. But you now carry that message into the next forty minutes, and those forty minutes are quietly worse than they should have been.

You don't feel this happening. That's the problem. There is no alarm that goes off when your capacity drops. The work just takes longer and feels heavier, and you assume you were tired.

ONE TOOL

The ready to resume note.

Before you leave a task, for any reason, write two lines on paper:

  1. Where I am right now

  2. The exact next action

That's it. Thirty seconds.

Leroy's later work found that a short note like this reduces the residue significantly. The loop closes because your brain can see that the task is stored somewhere and does not need to be held in memory.

I use this every time I get interrupted, and every time I end a work block. Coming back to a task with a written next action is a completely different experience than coming back to a blinking cursor.

ONE HABIT

Make your first block finishable.

Most people plan the morning like this: "work on the project." That is not a task, that is a topic. You sit down, spend twelve minutes deciding what to do, and the residue from that indecision follows you through the whole block.

Instead, the night before, write one sentence: tomorrow, 50 minutes, plus one thing you can realistically finish or clearly advance in fifty minutes.

Not because it's tidy. Because it removes the decision from the moment when your focus is most valuable and most fragile.

ONE CHALLENGE

This week: five days, one 50 minute block each morning. Phone in another room, not face down on the desk.

One block. Not two, not three hours. Five days in a row beats one heroic day, every time.

If something pulls you out mid block, write the ready to resume note before you go. That is the whole challenge.

If you haven't opened the Hyperfocus Manual yet, it's in the first email I sent you. The Daily Planner page is built for exactly the habit above.

Now the part I'm actually curious about. Hit reply and tell me what you're working on this week. One sentence is enough. I read every single one.

See you next Sunday.

— Paul