If-Then Plans: The Simple Trick That Makes New Habits Stick

Most people who want to exercise more, protect time for focused work or keep a steadier routine do not lack a goal. They have the goal. What goes missing is the moment of action: the 7:00 alarm, the gap between meetings, the point at which the evening could go either way.

An if-then plan is a small tool aimed at that moment. This article explains what it is, what the research behind it does and does not show, and how to write, test and adjust one plan of your own.

Why good intentions often stall

It is tempting to read a missed workout as a motivation problem or a flaw of character. The research summarised in a general reference on implementation intentions points somewhere less personal. It quotes the view that "the correlations between intentions and behavior are modest, in that intentions account for only 20% to 30% of the variance in behavior" [2].

That figure comes from a secondary summary of earlier studies, so treat it as orientation rather than a precise measurement. The original research papers are the place to check exact numbers.

The same summary reports a few related observations:

• Strong intentions were realised more often than weak ones [2].
• Past behaviour tended to predict future behaviour better than goal intentions did [2].
• The weak link between intention and action was attributed to people having good intentions but failing to act on them [2].

Read plainly, this describes a follow-through problem. You can sincerely want something and still not do it when the moment arrives, because the moment arrives in the middle of an ordinary day with other demands attached. The useful question shifts from "How do I want it more?" to "What exactly will I do, and when?"

What an if-then plan is

An implementation intention is a self-regulatory strategy in the form of an if-then plan. It sits beneath a goal intention and specifies the when, where and how of the behaviour that serves the goal [2]. The concept was introduced in 1999 by the psychologist Peter Gollwitzer [2].

The core move is to link a behaviour you have decided on in advance to a particular future event or cue [2]. The usual phrasing is some version of "When situation X arises, I will perform response Y" [2].

Compare two statements about the same goal:

• Goal intention: "I want to exercise more."
• Implementation intention: "If it is 7:00 and I have poured my coffee, then I will put on my trainers and walk for ten minutes."

The second example is an illustration written for this article, not a quotation from the research. Notice what it does. It names a cue (7:00, coffee poured), an action (trainers on, ten-minute walk) and a place in the day where the action belongs. Very little is left to be decided in the moment.

One more point from the same summary: if-then plans are described as a way of creating habits consciously, one plan at a time [2]. You choose the cue and the response deliberately, rather than waiting for a routine to form by accident.

Why specificity and cues may help

The summary describes the technique as aimed at a particular difficulty. Most people, it says, have little trouble defining concrete, attainable goals and plans, but often have trouble identifying a situation in which an action would be effective for reaching the goal [2].

An if-then plan supplies that missing situation. Instead of "sometime this week", you have "after I pour my coffee". The opportunity is named before it arrives, so you are more likely to recognise it when it does.

Two earlier findings are described as part of the research basis for the technique [2]:

• The goal-specificity effect: people tend to perform better when goals are challenging and specific than when they are challenging but vague [2].
• The goal-proximity effect: proximal goals tend to lead to better performance than distal ones [2].

Implementation intentions were developed on the basis of these findings [2]. That is a sensible reading of the logic: a plan that names a specific cue and a near-term action is about as specific and proximal as a plan can be.

Beyond this, there are many claims about what happens in the mind when a plan is formed, and about how long a new habit takes to settle. Treat confident statements of that kind with caution. The practical method below does not depend on them.

What the evidence shows, and where it is thin

The reference summary states that studies by Gollwitzer in 1997 and earlier show that implementation intentions can result in a higher probability of successful goal attainment, by predetermining a desired behaviour in response to a particular future cue [2]. Note the wording: "can result in", not "will".

Researchers have also examined implementation intentions in specific settings, including smoking cessation [1] and physical activity among working adults [3]. Being studied in a setting is not the same as being shown to work there, and the size and direction of effects in any given study are worth reading in the original papers before you rely on them.

So the fair summary is this. If-then plans have a clear rationale and a body of supportive research, but they are one tool among several, results vary between people and situations, and nothing here is a guarantee. Treat a plan as an experiment you run on your own routine.

How to write your own if-then plan

The when/where/how structure comes from the research [2]. The steps below are practical suggestions built around it.

1. Pick one small goal. One habit, not a life overhaul. "Walk for ten minutes" is easier to plan around than "get fit".
2. Choose a cue that already happens reliably. A time of day, a place, or an event that precedes the action: finishing breakfast, sitting down at your desk, closing the laptop at the end of the workday. A cue you already meet every day gives the plan frequent chances to fire.
3. Describe the behaviour as something you can see yourself doing. "Put on trainers and walk to the end of the road and back" is visible. "Be more active" is not.
4. Phrase it as "If X, then I will Y." Keep it to one sentence you could repeat without looking at it.
5. Say it or write it down. Put it where you will meet it: a note on the kettle, a line in your calendar, the first line of your notebook.

Exercise: three versions of one plan

Choose a single habit and write three versions of its plan.

1. Vague: "I will try to walk more this week."
2. Specific: "If I have finished my coffee at 7:00, then I will put on my trainers and walk for ten minutes."
3. Specific with a fallback: "If I have finished my coffee at 7:00, then I will put on my trainers and walk for ten minutes. If I miss the 7:00 slot, then I will do it straight after lunch."

Read all three and pick the one you can picture most clearly. Use it for one week. Each evening, make two marks in a notebook: did the cue appear, and did I act? Two columns are enough.

Common ways if-then plans go wrong

The following are practical troubleshooting points rather than research findings. Most of them come back to one idea: the difficulty the technique addresses is identifying the situation for action [2], so when a plan fails, the cue is the first thing to examine.

• The cue is too vague. "When I have a free moment" is not a situation you will recognise. Swap it for something observable: "when I close my last meeting of the morning".
• The cue is too rare. A cue that happens once a month gives you twelve attempts a year. Attach the action to something that happens daily or several times a week.
• The action is too large. "Do a full workout" asks a lot at the exact moment you are least inclined to give it. A smaller first step, such as putting your trainers on, is easier to start and can grow from there.
• Too many plans at once. Five new if-then plans in one week compete for the same attention. Start with one.
• The plan ignores real constraints. A 6:00 plan fails if the household is not awake until 7:00 or if you finish work at 9:00 the night before. Write plans for the day you actually have.

Exercise: the seven-day review

After a week, look at your two columns and ask which of these describes what happened:

• The cue rarely occurred. Replace it. Pick a different, more frequent cue and keep the action the same.
• The cue occurred but you did not act. Shrink the action until it takes under two minutes, then keep the same cue.
• The cue occurred and you acted most days. Leave the plan alone for another week. If it feels too easy, extend the action slightly.

A plan that does not work first time is information about the cue or the action. It is not evidence that the goal is out of reach, and revising the plan is usually more productive than abandoning the goal.

A calm way to begin

Reduce it to four decisions: one goal, one cue, one action, one week.

If-then plans are a tool with a coherent rationale and supportive, though not guaranteed, research behind them [2]. They do not replace motivation, good circumstances or a realistic goal. They narrow the gap between meaning to do something and doing it, by deciding in advance what the moment of action looks like.

Write your first plan now, while the goal is fresh. Fill in the sentence: "If __, then I will __." Then put it somewhere you will see it tomorrow morning.

This article is educational and is not personal, medical or therapeutic advice. If you have a health condition or are making changes to your health routines, speak with a qualified professional.