In 1830, Victor Hugo was badly behind on a book. His publisher had given him a hard deadline, and Hugo—like most of us facing a hard deadline—kept finding reasons not to work. So he did something strange. Victor Hugo's trick for forcing himself to write was to hand all of his clothes to a servant with instructions not to return them until the manuscript was done. Stripped of the option to go out, socialize, or wander, he sat down and wrote. The result was The Hunchback of Notre-Dame, finished ahead of schedule. The anecdote is recounted in Mason Currey's Daily Rituals, and while the details have been polished by two centuries of retelling, the underlying mechanism is very real.
What Hugo stumbled onto wasn't willpower. It was a commitment device: a decision made in a calm moment that removes your future self's ability to weasel out. And behavioral science has a lot to say about why it works.
Why removing options beats trying harder
Most people approach a stubborn goal by resolving to want it more. They promise themselves they'll try harder tomorrow. The problem is that motivation is not a fixed resource you can top up by force of will—it fluctuates by the hour, and it is reliably weakest at the exact moment you need to start.
Hugo's move sidesteps the problem entirely. By giving away his clothes, he didn't make himself want to write more. He made not writing physically inconvenient. The choice was pre-made when his resolve was high, and locked in for when his resolve would inevitably dip.
The economist Thomas Schelling spent much of his career studying exactly this kind of self-management—the way a person can strategically bind their own future behavior, treating the present self and the future self almost as two parties negotiating a contract. Hugo's clothes were the contract's collateral.
The research on self-imposed deadlines
The most direct experimental evidence comes from Dan Ariely and Klaus Wertenbroch, whose study "Procrastination, Deadlines, and Performance: Self-Control by Precommitment" was published in Psychological Science in 2002. They gave students the option to set their own deadlines for a set of papers, with penalties for lateness. Rationally, everyone should have set all deadlines for the last possible day—maximum flexibility, no downside. But many students voluntarily imposed earlier, evenly spaced deadlines on themselves.
Why would anyone volunteer for tighter constraints? Because they knew themselves. And crucially, the students who imposed those self-binding deadlines performed better than those who left everything to the end. Ariely and Wertenbroch concluded that people are at least partly aware of their own tendency to procrastinate and will pay a price—in flexibility—to protect themselves from it.
That is Hugo in miniature. He knew the version of himself who would wake up wanting to stroll through Paris, and he neutralized that version in advance.
Turning a vague intention into a triggered plan
Hugo's trick has a second ingredient that's easy to miss: it created an unmistakable cue. No clothes meant write. The situation itself pointed at the behavior.
This is the heart of Peter Gollwitzer's work on what he calls implementation intentions. In his paper "Implementation Intentions: Strong Effects of Simple Plans" in American Psychologist (1999), Gollwitzer showed that goals phrased as "if situation X arises, then I will do Y" are acted on far more reliably than vague goals like "I intend to do Y." The specificity offloads the decision to the environment, so you're not renegotiating with yourself every time.
"I'll write more this year" is an intention. "When I sit down after breakfast, I open the manuscript and write until noon" is a plan with a trigger. Hugo's naked-in-the-study setup was an if-then plan enforced by circumstance: if I want to leave, then I can't, so I write.
Hard goals only work when they're clear
There's a reason Hugo's constraint produced a finished book rather than a hundred aimless pages. He had a specific, difficult target: finish this manuscript.
Decades of research by Edwin Locke and Gary Latham—summarized in their American Psychologist article "Building a Practically Useful Theory of Goal Setting and Task Motivation" (2002)—consistently found that specific, challenging goals lead to higher performance than vague "do your best" goals. Difficulty drives effort, but only when the goal is concrete enough that you can tell whether you've hit it.
A commitment device without a clear target just makes you miserable in your underwear. Pair a hard constraint with a sharp goal and you get Hugo's result. The constraint supplies the pressure; the clear goal directs it.
Building your own version (you can keep your clothes)
You don't need to hand your wardrobe to anyone. What Hugo actually engineered was three things working together:
- One unambiguous goal. Not "be more productive." One target you can finish or measure. Locke and Latham's research is clear that vagueness kills effort.
- A pre-made decision that your future self can't easily undo. This is the commitment device. It works because, as Ariely and Wertenbroch found, we're better at binding ourselves in advance than at resisting in the moment.
- A cue and a reckoning. A trigger that tells you when to act, and a moment where you honestly face whether you did. Gollwitzer's if-then structure supplies the trigger; the reckoning is what keeps the whole thing honest.
The modern problem is that most of us have no servant to hide the clothes and no publisher standing at the door. We set the goal in a burst of motivation on Sunday night, and by Wednesday there's no external structure left—just us, renegotiating with ourselves, losing.
A lighter version of Hugo's collateral
You can rebuild that missing structure without going to extremes. The mechanism that made Hugo's trick work—an external system that decides for you and then checks whether you followed through—can be recreated with something as simple as a daily loop.
That's the entire idea behind ClearBuilt. You name one goal. Each morning you get an email with today's tasks—your trigger, arriving before your resolve has a chance to dip. Each evening you get a single yes/no check-in—your reckoning, the moment you can't quietly skip. No app to open, no dashboard to babysit, no motivation required at the moment it matters least. It's $9 a month, and it does for an ordinary goal roughly what a locked wardrobe did for Hugo: it makes the plan harder to abandon than to follow.
Hugo finished his book because he arranged his world so that writing was the path of least resistance. You can arrange yours the same way—clothes optional.