If-Then Plans: The Simplest Science-Backed Tool for Urges

This morning you meant it: not tonight. Now it's 10:50 p.m., the apartment is quiet, and “not tonight” has gone strangely soft. Nobody decided anything. The evening just slid.

That's the weak spot in most resolutions. “Not tonight” is a wish about how things turn out. It says nothing about what you'll actually do at 10:50, in bed, with the phone in your hand.

Psychologists have a better format, and it fits in one sentence: if this happens, then I'll do that.

Why willpower in the moment is a bad bet

You've probably heard that willpower works like a fuel tank. Every temptation you resist burns a little, and by night you're running on fumes. The idea, called ego depletion, was hugely popular. Then, in 2016, a replication across 23 labs and more than 2,000 people (Hagger and colleagues) found an effect close to zero.

Belief seems to matter more than the tank. Veronika Job, Carol Dweck and Gregory Walton found in 2010 that people who believed willpower runs out showed more depletion than people who didn't.

You probably don't run dry like a car. The trouble with relying on willpower is timing. Temptation peaks when the cue is already firing and the reward is one tap away. By then, the reasons you had at breakfast feel abstract. Betting everything on a decision made right then is a bad plan, even if your willpower is fine.

Self-control researchers point somewhere more useful. Angela Duckworth, Tamar Gendler and James Gross concluded in a 2016 paper that “situational strategies” (choosing or changing your situation before temptation arrives) work better and cost less effort than resisting in the moment. A 2012 study that sampled people's experiences throughout the day (Hofmann, Baumeister, Förster and Vohs) fits the picture: people high in self-control reported fewer temptations. They seem to arrange their lives to avoid the fight, rather than winning more fights.

An if-then plan is a situational strategy you can carry around in your head. You make the decision early, while you're calm, and let the situation remind you of it.

What are if-then plans, and why do they work?

Psychologists call them implementation intentions. The format is “If [situation], then I will [action].” That's all.

Peter Gollwitzer and Paschal Sheeran pooled 94 independent tests of these plans in a 2006 meta-analysis. If-then plans had a medium-to-large effect on reaching goals (an effect size of d = 0.65, for the statistically curious). For a tool that takes a minute to write, that's a lot. None of those tests involved porn, so read it as strong evidence for the tool, not a promise about any one habit.

Why would one sentence do so much? Habits run on cues. Your bed, an empty house, the particular flatness of a Tuesday evening: each has been paired with the same routine so many times that the cue starts the routine before you've thought about it. An if-then plan borrows that machinery. It hooks a new action to the exact cue that already triggers the old one, so when the cue appears, the new response is already there, decided.

In the moment, you don't have to ask “What should I do?”, which is the worst question to ask at 10:50 p.m. You just follow an instruction you wrote while you were thinking clearly.

Weak plans vs. strong plans

The difference between a plan that holds and one that doesn't is usually precision. Three pairs:

Weak: “If I feel tempted, then I'll hold out.” Stronger: “If I head to the bathroom, then my phone stays on the desk.” The first waits for temptation, which comes late; by then the routine is already rolling. The second fires on an earlier cue you can't miss.

Weak: “If I get an urge, then I won't watch porn.” Stronger: “If I catch myself opening a private browser window, then I'll close it, stand up and go fill a glass of water.” A “then I won't” plan names what to avoid and leaves a blank where the action should be. Give yourself something specific to do, ideally something that moves you away from the screen.

Weak: “If I'm stressed, then I'll do something healthy.” Stronger: “If I come home wound up, then I'll change clothes and walk around the block before I sit down.” “Something healthy” forces a choice in the moment, which is exactly what the plan was supposed to spare you.

Keep the action small enough to do at your worst. “Then I'll clean the whole apartment” won't happen at midnight. “Then I'll do ten push-ups” might.

If-then plans for the most common triggers

Start with the cue that got you last time. Here are a few that come up a lot, with plans you can adapt:

• Bed. “If I'm brushing my teeth at night, then my phone goes to charge in another room.” If your phone is your alarm, an old-fashioned alarm clock is part of the plan.

• Boredom. “If I notice I'm scrolling with no goal, then I'll stand up and do the first thing on my boredom list.” Write that list ahead of time: dishes, a walk, a call, a game, a podcast with the screen off.

• Stress. “If I finish a hard shift or a tense call, then I'll step outside for a few minutes before I look at my phone.”

• Alone at home. “If I'll have the place to myself tonight, then I'll plan the evening before it starts: dinner, a call with a friend at 8, laptop in the living room.”

• The thought itself. “If I hear myself thinking ‘just a quick look,’ then I'll say ‘I don't do that anymore’ and leave the room.”

That last line is worded on purpose. In a 2012 study in the Journal of Consumer Research, Vanessa Patrick and Henrik Hagtvedt found that refusing with “I don't” (“I don't eat that”) rather than “I can't” helped people stick to their goals. “I can't” sounds like a rule somebody else made, and rules invite negotiation. “I don't” sounds like a fact about you, and there's less to argue with. It wasn't a porn study, but the logic travels well.

Where to keep your if-then plans

A plan you can't remember at 10:50 p.m. might as well not exist. Write each one in the exact if-then format and read it out loud once or twice. Then picture it: you at the sink with a toothbrush, your hand carrying the phone to the charger in the hall. You're rehearsing the link between the cue and the new action.

Keep your plans where you'll see them in the moment. If you use Firmo90, the Escape Plan is a natural home for them: it's your own step-by-step plan for a crisis moment, and a few good if-then lines are exactly that.

Then review them once a week. When a plan fails, don't scrap the method; fix the plan. Was the cue too late? Was the action too big? Three plans you actually remember will do more than twelve you don't.

For now, write one. Pick the cue that got you most recently, and put the plan somewhere you'll see it before that cue comes around again.