The short answer

An if-then plan connects a recognisable situation to an action decided in advance: ‘If I finish breakfast, then I open my calendar.’ Choose a cue you will encounter and an action small enough to carry out then.

“I will be more organised tomorrow” expresses a wish without deciding when the new behaviour begins. Tomorrow arrives with the same interruptions, open tabs and competing tasks.

An if-then plan makes a smaller, more specific decision in advance. It connects a situation you can recognise with something you intend to do at that moment.

Choose a cue you can identify

The “if” should describe a moment clearly enough that you can tell whether it happened. “When things calm down” is difficult to recognise. “When I close the morning video call” is more concrete.

You might choose an existing routine, a time and place, or a predictable obstacle. What matters for your experiment is that you are likely to encounter it and can notice it when it happens.

Do not choose an ideal moment that rarely exists in your actual day. A plan attached to uninterrupted quiet may be beautifully written and seldom usable.

Decide the action before the cue arrives

The “then” should be something you could reasonably do in that situation. “Then I become organised” leaves the decision unresolved. “Then I write the next appointment on my calendar” identifies an action.

Keep the action proportionate to the moment. If you have two minutes before leaving home, a plan that requires twenty is unlikely to fit. You can always do more, but the written commitment should be workable on an ordinary day.

Here are practical examples to adapt:

  • If I put my lunch plate in the sink, then I check the afternoon calendar.
  • If I finish a work call, then I record its next action before opening my inbox.
  • If I notice I have opened a distracting tab, then I close it and read the next line of the document.

Make room for an obstacle

A plan can include a predictable interruption without trying to anticipate every possible failure. Choose the obstacle that occurs most often and write one response.

If your usual reading time is interrupted, the response might be to read a single page at the next dependable cue. This is an experiment in recovery, not a requirement to squeeze the full missed routine into a crowded day.

Avoid writing a branching instruction manual. The plan should reduce what you must decide in the moment, rather than give you a new document to interpret.

Test one sentence for a week

Write your sentence where you will see it before the cue. Over the next week, note three things: whether the situation occurred, whether you noticed it, and whether the action followed.

These are different failure points. A cue that never occurred needs replacing. A cue you missed may need a visible reminder. An action you noticed but could not perform may need shrinking or moving to another moment.

Treat the plan as a tool

Implementation-intention research supports specifying the cue and response in advance. Your own sentence still needs to fit your environment, resources and goal.

After the trial, keep the useful part. Revise what did not fit. If the action itself remains vague, name a physical first step before trying another cue.

Sources & context

Implementation intentions have been studied across many goals and populations. The research supports advance cue-and-action planning in general; it does not guarantee that any particular personal plan will work.

  1. Gollwitzer & Sheeran (2006): Implementation intentions and goal achievement ↗

    A meta-analysis of research on implementation intentions: plans specifying a situation and a response.

The practical exercises in this article are suggestions, not individually validated interventions. How we use evidence.