Implementation Intentions: When-Then Planning
- Difficulty
- Easy
- Time to result
- ~weeks to results
- Steps
- 7
- Confidence
- —
Drawing on Peter Gollwitzer's research, Pychyl separates goal intentions ('I want to be fit') from implementation intentions — pre-decided plans of the form 'in situation X I will do behaviour Y to achieve subgoal Z'. The mechanism is twofold. First, abstract thinking makes a task feel like it belongs to tomorrow, while concrete thinking makes it belong to today, so specificity manufactures urgency. Second, the cue lives in the environment rather than in your internal state, so you stop relying on feeling like it. Event segmentation theory adds the refinement: bolt the new behaviour onto an existing script — a morning routine, brushing your teeth, getting out of the shower — where it fits naturally. None of it works without genuine commitment to the underlying goal.
Origin
Extracted from Deep Dive with Ali Abdaal
How to run it
- 1
Check the commitment first
Gollwitzer was explicit even in the late 1990s papers: without commitment to the goal, the technique does nothing. Before planning, ask why you want this. If the honest answer is 'because it might go viral' or 'it has to be a bestseller', fix that before reaching for tools.
Watch out No trick or technique on its own will ever make a difference if you are not committed to the goal.
- 2
Write the plan in situation-behaviour-subgoal form
Convert the goal into the research-backed format: in situation X, I will do behaviour Y, to achieve subgoal Z. 'When I pick up my toothbrush, I will put the floss on the counter' beats 'I should floss more'.
Pro tip Say it as a when-then sentence out loud; if you can't finish it, the plan isn't specific enough yet.
- 3
Anchor the cue to an existing script
Event segmentation theory says our days run on scripts — a morning script, a bedtime script. Slot the new behaviour where it makes sense inside one. Gollwitzer's breast self-examination work saw compliance jump when women tied the exam to getting out of the shower; asking them to do it midway through cooking dinner would have failed.
Pro tip Choose a cue you already perform without fail, every single day.
Watch out A cue that never reliably occurs produces a plan that never reliably fires.
- 4
Put a time and a place on it
Ali's version: 'study physiology tomorrow' becomes 'tomorrow, 7pm'. Abstract items float to tomorrow forever; a scheduled slot pulls them into today.
- 5
Shrink the action until it can't be dodged
'Study physiology' is not doable. 'Read chapter 4' is still too big. 'Questions 8 to 13 in this book' is doable. Keep cutting the action until there is no ambiguity about what the first minute looks like.
Pro tip If you can't picture your hands doing it, it's still too abstract.
- 6
Use the calendar as an audit, not just a scheduler
Pychyl block-schedules everything, colour-coded, sliding blocks when a day runs late. The point isn't only output — it lets him glance at the week and ask whether he actually exercised enough.
- 7
Drop the scaffolding once it's a habit
The when-then is a bootstrap. Pychyl needed it to start flossing; now he can't imagine not flossing and the plan is redundant. As the Buddhist image goes, the raft got you across the river — don't pick it up and carry it.
Watch out Keeping a tool past its usefulness can start to get in the way.
In the wild
Pychyl's dentist warned him about his gums, but he resented flossing and it never happened — even though brushing was a rock-solid daily habit. So he built an implementation intention off the habit he already had: when I pick up my toothbrush, I will put the floss on the counter; when I put down my toothbrush, I will pick up my floss. The when-then bootstrapped the behaviour until it became automatic, and he then discovered flossing actually felt good and was far less aversive than he'd assumed. He now flosses daily and later reordered it to floss before brushing.
→ A resented once-a-week task became a daily automatic habit, and the anticipated aversiveness turned out to be imagined.
Ali wanted to try Acro yoga, which demands hamstring flexibility he didn't have. His plan — twenty minutes of stretching a day — never happened. He replaced it with a cue anchored to an existing script: his electric toothbrush buzzes every thirty seconds, so bottom row of teeth means left leg up on the bathtub, top row means right leg. It now runs automatically, to the point that brushing at a friend's house feels wrong without it. Pychyl's refinement is that this works partly because the bathroom script had a natural slot for it.
→ Daily stretching happened consistently without willpower, because the cue was welded to a behaviour that never gets skipped.
Common mistakes
Skipping the commitment check
People reach for techniques to force a goal they don't actually want. Pychyl tells aspiring YouTubers and authors the same thing: if you don't fundamentally want to do this, no plan, tool or trick will make you do it.
Anchoring to a cue that doesn't reliably happen
'Midway through making dinner' is not a dependable moment; getting out of the shower is. If the cue is fuzzy or occasional, prospective memory fails and the plan silently dies.
Leaving the action abstract
'Learn Mandarin on the weekend' or 'study physiology' can never be executed. Abstract tasks feel like they belong to tomorrow; only concrete ones feel like today.
From the transcript
“they're best framed as in situation X I'll do Behavior y to achieve sub goal Zed”
“when we think about things in the abstract they seem to belong to Tomorrow there's no sense of urgency to them and when we think…”
“you have to have a commitment to that goal or it's not going to work right there's no trick or technique on its own will…”
From the episode
World's Leading Expert On How To Solve Procrastination - Dr Tim Pychyl
Dr Tim Pychyl