The Lizard and the Iceberg
Change the environment that keeps producing the unwanted behaviour
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 5
- Confidence
- 96%
Storr's metaphor places a desert lizard on an iceberg: the animal struggles because its setting is wrong, not because the lizard itself has suddenly become defective. Return it to the desert and it can thrive without an internal transformation. Applied to behaviour, the model asks people to stop locating every cause inside character and instead examine the cues, access, and cultural meaning surrounding an action. Going to a gym changes the context for exercise; not keeping tempting food at home removes a repeated test of restraint. The framework does not claim that environment explains everything. Its practical value is narrower: when behaviour repeatedly follows a setting, redesigning that setting can make consistency easier than repeatedly demanding that the person feel like their most disciplined self.
Origin
Storr says he calls the story the lizard and the iceberg in Selfie, using a desert animal placed on ice to illustrate person-environment fit.
Core principles
- 01Behaviour responds to surroundings as well as intention
- 02A poor person-environment fit can make self-control unnecessarily difficult
- 03Moving into a useful context can cue the desired action
- 04Removing a recurring temptation is often easier than resisting it repeatedly
How to run it
- 1
Name the unstable behaviour
Choose one behaviour that changes across days or settings. Describe what happens rather than labelling yourself disciplined or weak.
Pro tip Use a recent example with a clear time and place.
- 2
Map the environment
List the physical, social, and temporal cues present before the behaviour. Identify which conditions make the unwanted action easy or the desired action awkward.
Pro tip Include cultural cues such as the meaning attached to Friday night.
Watch out Do not reduce every cause to environment; look for a reliable contextual link.
- 3
Remove frictionless temptation
Make the unwanted response less available by removing, relocating, or delaying its cue. Avoid setting up a test of willpower that repeats all day.
Pro tip Start with the item or app you reach for automatically.
- 4
Enter the supporting setting
Move the desired behaviour into a context that naturally cues it. Prepare the place and materials before motivation is needed.
Pro tip Use an established setting, such as a gym or quiet workspace, when available.
- 5
Test the fit
Observe whether the redesigned setting changes the action across several repetitions. Keep the useful change and revise conditions that still produce friction.
Pro tip Judge the environment by behaviour, not by how virtuous the redesign feels.
In the wild
Storr says his resolve around weight loss changes over the week and that food kept in the house is likely to be eaten. His environmental response is to avoid keeping that food at home rather than trusting Friday's preferences to match Monday's plan.
→ The unwanted choice becomes less immediately available when self-control is lower.
Storr notes that taking yourself to the gym changes the environment. The location makes exercise the expected action instead of requiring the home environment to carry the same cue.
→ The desired behaviour receives support from the setting rather than intention alone.
Common mistakes
Demanding a personality transplant
The model is designed to change the setting first, not to wait until you become a permanently different person.
Keeping the cue nearby
A nominal redesign does little if the tempting action remains immediate and effortless.
Is it for you?
Best for
Recurring habits that reliably improve or deteriorate in particular places, times, or social settings.
Not ideal for
Problems whose main drivers cannot be materially changed through the person's immediate environment.
From the transcript
“nothing has changed in the lizard. It's the environment that's changed”
“maintain your environment to maintain yourself”
From the episode
The More Successful You Are The Longer You’ll Live: Will Storr