The Yes-Damn Rule
- Difficulty
- Starter
- Time to result
- ~days to results
- Steps
- 6
- Confidence
- —
A one-line decision rule for future commitments. The yes-damn effect is the pattern where you agree to something a month out — a call, a speaking engagement, a favour — on the silent assumption that you'll have more time then, and arrive at the date thinking 'damn, why did I say yes to that?'. Bloom's rule follows directly: any time the reason you're saying yes is that you expect more time in the future, say no instead, because you will not have more time. The only exception is a genuine structural change — quitting a job, ending a semester, a real change in the shape of your life. For ambitious people especially, freed time is immediately consumed by some new thing, so the future slack you're borrowing against never arrives.
Origin
Extracted from Deep Dive with Ali Abdaal
How to run it
- 1
Catch the future commitment as it happens
The trigger is any yes attached to a date that isn't this week — 'yeah, I'll do that call next month', 'sure, I'll speak at that after the book is done'.
- 2
Interrogate the reason for the yes
Ask explicitly: am I saying yes because I want this, or because I assume I'll have more time by then? The assumption is usually unstated, which is why it's never tested.
- 3
If the reason is future time, say no
Bloom's rule: 'anytime you say yes to something under the assumption that you're going to have more time for that thing in the future, you should just say no instead'.
Pro tip Say no now while it's cheap — declining in advance costs far less than cancelling on the day.
- 4
Apply the structural-change exception
The rule flips only if something in your life is genuinely, structurally changing — quitting a job, finishing a degree — such that a real block of time appears rather than an imagined one.
Watch out Even a real structural change gets partly eaten: Ali quit medicine expecting free time and ended up working more hours than he ever did as a doctor.
- 5
Assume ambition will fill the gap
Bloom's mechanism for why the future time never arrives: 'especially not as an ambitious person, you're just going to take on some new thing that is going to fill that time'.
- 6
Audit past 'after X' promises
Look back at what you deferred until after the last big deadline. Ali checks himself against this constantly while finishing his book, noticing how many things he's parked behind 'when the book is done'.
Pro tip Ask the regret question instead: will you wish you'd spent three more hours on the deliverable, or had one more road trip with family?
In the wild
In the final month of editing his book, Ali was invited to drive his mum and grandma two hours to an old friend's dinner party. He didn't want to go — the drive was mostly silence, the deadlines were real — and he called his mum asking how important it was that he came. Then he recalled Tim Urban's writing on the tail end: the countable number of times left with the people you love. He asked himself whether he'd ever regret not spending three extra hours on the book, or regret missing one more road trip with his mum and grandma. The answer was obvious. He went, enjoyed it, and met new people.
→ A trip he'd have deferred indefinitely became a memory, at the cost of three hours of book editing.
While still working full-time as a doctor, Ali kept deferring things — once he quit the job, he'd have all the time in the world for this and this and that. He quit, and ended up working more hours on YouTube and the business than he ever worked in medicine. All the promised free time disappeared, including the World of Warcraft hours he'd told himself he was owed. Bloom ties it back to Tim Ferriss in the Four-Hour Workweek: a whole class of professionals working brutal hours so they can do something when they retire, and the vast majority of them never do it.
→ A concrete demonstration that even a genuine structural change doesn't produce the slack you borrowed against.
Common mistakes
Confusing a real change with an end date
A deadline passing is not a structural change. The book ends, the semester ends, and the ambitious person immediately takes on the next thing that fills exactly the same hours.
Saying yes to avoid the awkwardness now
The yes-damn effect is partly a comfort trade — future you pays for present you's reluctance to decline. The decline is cheapest on the day you're asked.
Using the rule to decline everything
The rule targets one specific reason for saying yes. Things you genuinely want, and things whose window is closing, are not what it's designed to filter out.
From the transcript
“The yes damn effect is this idea that uh we say yes to things and then later”
“you're going to have more time for that thing in the future, you should just say no instead. Because you're never going to have more…”
“if it's important, then it's going to be if if it's important, then it should be important now rather than important in the future”
From the episode
9 Systems To Build A Life Of Abundance - Sahil Bloom
Sahil Bloom