Attention Residue and the One-Line Fix

Here is the sequence. The reasoning comes after it, because the reasoning is the part most people skip and it is the part that makes the difference.

Five minutes

Minute 0. Write the next line, not the summary. Before anything else, write down the specific next action on the thing you are stopping — not "finish the report", but the actual sentence, file or call you would open next. One line. This step is doing most of the work.
Minute 1. Clear the visible surface. Not the whole desk. The rectangle you can see without turning your head. Anything belonging to the finished task goes out of that rectangle.
Minutes 1–4. Make the cup, standing somewhere else. Away from the desk. 10–15 g for a working-day serving, whisked properly, drunk at about 65 °C. If weighing anything out at 3pm is the thing that kills this, a 1 oz packet is one cup with no decision attached — about the right amount of thinking to do about a reset.
Minute 4. Sit down and read your one line back. Then start.

Why the first step is not optional

The reason your afternoon feels like wading has a name. Sophie Leroy, an organisational psychologist, called it attention residue: when you move from one task to another, a portion of your attention stays behind on the first one, and the work you are now doing runs on what is left.

The residue is not a matter of willpower and it does not respond to trying harder. It is simply that the previous task is still partially loaded, still generating thoughts, still occupying capacity that the current task needs.

The finding that matters most is about what reduces it. Residue is worst when a task is left unfinished and open — no plan, no defined resumption point. When people are given the chance to form a specific plan for how they will finish, the residue drops substantially, even though the task itself is no less unfinished than it was before.

The mind seems to hold on to unresolved work partly because it has nowhere to put it. Give it a written resumption point and it will, to a useful degree, let go.

This is why "write the next line" comes before "clear the desk" and before the drink. Tidying and a hot cup with the previous task still hanging open produces a clean desk and an unchanged head.

Why standing somewhere else

Physical relocation does a second, smaller job. Changing location interrupts the running context, and a few minutes elsewhere prevents the reset from becoming another thing you do while staring at the same screen.

It also enforces the duration. A drink made at the desk gets made in ninety seconds while reading email, which defeats the point entirely.

Why cacao rather than nothing

Honestly: the drink is not the mechanism. The plan is the mechanism. What the drink provides is a reliable four-minute container that you will actually observe, in a way that "take a short break" does not survive contact with a busy afternoon.

A break with no defined task tends to become a phone. A break with a small procedure in it — measure, warm, whisk, wait — stays a break. That is the whole contribution, and it is worth more than it sounds.

When it will not work

Two situations, worth naming plainly.

If the previous task is genuinely urgent and unresolved, the resumption note will not release it, because the mind is right to hold on. Finish it or reschedule it properly; do not try to ritual your way past a real deadline.

If you are switching between more than about three threads, a five-minute reset per switch costs more than the residue does. The problem there is the number of threads, not the quality of the transition, and no cup fixes it.