Habits
Introduction to Habits
Seven days on how habits actually form, and the small moves that make a new one stick where willpower has not.
7 lessons · Available in the app
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The Will to Persist
Twenty-one short lessons on what actually makes people keep going — and on the two famous answers that got smaller the moment anyone tested them properly.
Inside this path
A little more understanding.
Persistence has three famous explanations. Angela Duckworth supplied a trait, Carol Dweck supplied a belief, and Cal Newport supplied a way of arranging a working week. Over the last decade two of those three have been tested hard and come back much smaller than the books promised — and knowing exactly how much smaller is more useful than the original claims ever were. Twenty-one lessons of about five minutes each: what survived, what didn't, and what the evidence says actually predicts sticking with something.
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Where the path begins · Lesson 01
Three Kinds of Answer
Why persistence has three famous explanations, and why the difference between the kinds of explanation matters more than any of them.
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One idea at a time.
In sequence.
See the 21-lesson outline
Three Kinds of Answer
Why persistence has three famous explanations, and why the difference between the kinds of explanation matters more than any of them.
Twenty-One Days Is Not a Number
Where the famous twenty-one-day figure came from, what the actual data says, and why this path runs twenty-one lessons anyway.
The Cadets
Duckworth's West Point study, stated at its true size — the strongest single result in the grit literature.
The Thing That Was Already There
The meta-analysis that reframed grit — and what it found living underneath.
Half of It Does the Work
Grit has two declared halves, and only one of them predicts anything much.
The Hours That Didn't Explain It
Deliberate practice, measured across eighty-eight studies — and the number that replaced the famous one.
The Top Runs Backwards
A 2025 review of nearly thirty-five thousand world-class performers, and the predictors that reverse sign.
Two Children, One Puzzle
Dweck's founding observation — two ways of meeting a task that has just beaten you.
Smart, or Hard
The praise experiment that gave the mindset idea its practical hook.
Every Study Anyone Could Find
What happened when the whole mindset literature was pooled — and why two teams of meta-analysts read the same evidence and reached opposite verdicts.
The Best Test Anyone Ran
The large preregistered national trial of a mindset intervention, and the moderator that changed what the whole idea is.
False Growth Mindset
Dweck's own public correction of what her idea became in schools, and why "just try harder" installs the failure it was meant to prevent.
The Name on the Idea
The destiny-and-growth research about relationships — whose it actually is, what it really found, and how strong the evidence is.
The Claim That Cannot Fail
Newport's protected hours as a third kind of claim, and what it costs you that advice can never be replicated.
Twenty-Three Minutes and Fifteen Seconds
Where the most-quoted number in modern work advice came from, what the published figure actually is, and what that interval is really made of.
The Paper Everyone Reads Backwards
The interruption experiment that found interrupted people worked faster, and where the real cost turned up instead.
The Violinists, Again
The preregistered replication of the study that founded the whole practice literature, and what changed when the rules were tightened.
Becoming the Study
How to run an honest test of a prescription on one person, so a bad result lands on the method instead of on you.
If-Then
Implementation intentions — the strongest practical result in the path, and why it works by changing the moment rather than the person.
The Fifth Answer
The pattern running under the whole path — how much of persistence turns out to be about the situation rather than the person.
What Persists
The two questions that size any claim about persistence, an inventory of what survived, and a close.
Keep exploring
Another question to follow.
Communication
Introduction to Communication
Seven days on the small moves that decide whether your difficult conversations go well or go badly, for the adult who has never been taught them.
7 lessons · Available in the app
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Finance
Introduction to Financial Independence
Understand what your life costs, how saving changes your options, and how to plan beyond the next payslip.
7 lessons · Available in the app
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