There is a difference between doing something that may make life better and checking, minute by minute, whether it is making you happy enough.
The first can be as ordinary as calling a friend. The second turns an emotion into a target that must be monitored, compared and corrected. A 2025 paper in Applied Psychology: Health and Well-Being suggests that this active management may carry an immediate cost.
Across four studies, Aekyoung Kim and University of Toronto professor Sam Maglio linked more intense happiness seeking with poorer self-control. When the researchers prompted participants to pursue happiness, people ate more chocolates in one experiment and quit a difficult task sooner in another.
That is an intriguing pattern, but the boundary matters. The studies did not show that joy drains willpower, or that people should stop trying to improve their lives. They tested a narrower process: trying to maximize positive emotion and minimize negative emotion, then measuring what happened on the next task.
The paper studied maximizing, not ordinary enjoyment
Kim and Maglio define happiness seeking as an effort to experience as much positive emotion and as little negative emotion as possible. It is not the same as finding a valued activity satisfying, choosing a supportive relationship or appreciating an unplanned good moment.
The distinction can sound slight, but it changes the psychological job. Enjoyment is an experience. Maximizing requires a standard, an estimate of the current feeling, and some action intended to close the gap.
That is why the researchers expected happiness seeking to demand self-regulation. A person has to keep steering attention and behavior toward one internal state while steering away from another.
The hypothesis was not that happiness itself consumes anything. It was that repeatedly trying to produce and control it could leave a person less ready to resist a temptation or persist with an unpleasant demand immediately afterward.
What if the reason we struggle so much with happiness… is because we keep trying to force it? This video dives into how sometimes, giving up on being happy is the way to achieve it…
Four studies moved from association to manipulation
The first study asked people about their tendency to seek happiness and about failures of self-control in daily life. More habitual happiness seeking was associated with more reported failures.
Self-reports alone cannot establish cause. Someone who finds everyday regulation difficult might become more concerned with improving their mood. Stress, personality or another unmeasured factor could also influence both answers.
The second study added a behavioral measure. Participants ranked lists of products, and people who scored higher on happiness seeking spent less time on the task. That moved the finding beyond a second questionnaire, although it remained correlational.
The final two studies changed the design. Instead of merely measuring how much people pursued happiness, the researchers prompted one group to do so and then compared later behavior with a control group. This sequence is the strongest basis for the paper’s claim about subsequent self-control.
A University of Toronto account of the research describes the logic plainly: the effort spent trying to feel happier may leave less capacity for the next act of regulation.
A bowl of chocolates became the temptation test
In Study 3, participants saw advertising that either emphasized happiness or served as a control. They then received a large bowl of chocolates, were told to eat as many as they wished, and rated the candy’s taste.
Those primed to pursue happiness ate more. The researchers treated the difference as a greater vulnerability to a self-control lapse after happiness seeking.
This experiment is memorable because it makes the proposed cost concrete. It is also the part that deserves the most restraint in retelling. The study involved just 36 people, leaving a small sample on which to rest a broad inference.
The behavioral measure also embeds an assumption. Eating fewer chocolates counts as successful self-control only when restraint is the active goal. The test can capture sensitivity to an available temptation, but it cannot show that the people who ate more had made a damaging choice in their own lives.
So the result is evidence of a short-term behavioral difference under controlled conditions. It is not evidence that happiness seekers generally overeat, nor a nutritional claim about chocolate.
The final experiment measured persistence
Study 4 recruited 188 participants and used a different route. People made repeated choices between pairs of everyday products. One group was told to choose the item that would make them happier, while the comparison condition focused on making accurate choices.
Participants then worked on a challenging mental task. The happiness-focused group gave up sooner.
Because the instruction came before the persistence test, this design supports the idea that deliberately seeking happiness can alter behavior on a task that follows. It also avoids depending entirely on whether participants accurately describe their own self-control.
But persistence in one artificial task is not a complete measure of willpower. It tells us nothing directly about how someone handles a month’s worth of deadlines, keeps a promise, manages a conflict or sustains a health habit.
The study also did not establish that quitting sooner was irrational in every sense. If a happiness prompt made a tedious task feel less worth the effort, a change in priorities could resemble depleted capacity in the observed behavior.
The resource explanation is a model, not a meter reading
Kim and Maglio interpret the four studies through limited regulatory resources. On this account, continual emotional management draws on the same finite capacity needed for restraint and persistence.
The paper’s experiments measured choices, chocolate consumption and task persistence. They did not directly measure a store of mental energy falling between the happiness intervention and the self-control task.
That distinction matters because psychologists have debated whether self-control behaves like a resource that becomes depleted. Alternative explanations include motivation, attention, learned expectations and decisions about whether further effort is worthwhile. Earlier University of Toronto research on work and fatigue likewise cautioned against assuming that declining performance must reflect a general supply of willpower running out.
The new results fit a resource account, but they do not exclude every rival explanation. Calling the mechanism depletion is a theoretical interpretation, not a direct meter reading inside the mind.
The authors go further and propose a possible feedback loop. Chronic happiness seeking might repeatedly weaken self-regulation, leading to choices that make happiness harder to sustain and prompting still more effort to manage it. Their four studies did not track that cycle across months or years, so it remains a reasoned proposal rather than an observed long-term trajectory.
Monitoring may be the costly part
The findings make more sense when placed beside work that separates wanting happiness from constantly evaluating it. As ScienceBlog previously reported, frequent judgments about one’s own happiness have been associated with poorer well-being even when valuing happiness by itself was not.
Kim and Maglio have found a related cost before. In a 2018 study on happiness and perceived time, pursuing happiness made people feel as if time were scarce. If happiness is treated as a goal that has not yet been reached, the gap itself can become another demand.
This does not make positive emotion suspect. It suggests that the method matters. A person can cook with someone, walk outside or become absorbed in a difficult project without repeatedly auditing whether the activity is producing the correct quantity of happiness.
A 2026 review of the pursuit of happiness reaches a similarly conditional position: seeking happiness can help or hinder well-being depending on the process involved. Treating all forms of pursuit as one behavior hides the difference between arranging supportive conditions and micromanaging an emotion.
A short-term effect should not become a life rule
The 2025 paper gives a useful sequence: a happiness-related prompt came first, and a change in temptation or persistence followed. It does not show that the effect lasts, accumulates in the same way outside a laboratory or makes people less happy afterward.
Nor do the studies settle who is most affected, under what circumstances or across which cultures the effect is strongest. The small chocolate experiment especially needs replication with larger and more varied samples.
It would also be a mistake to translate the paper into advice to ignore unhappiness. Persistent distress can contain information about circumstances that need attention. The study concerns the cognitive work of continual maximization, not whether people should seek support or change a harmful situation.
The humbler conclusion is also the more interesting one. Happiness may be easier to support indirectly than to command. Relationships, rest, meaningful work and small pleasures can be chosen for their own value, while the emotional outcome is allowed some room to arrive on its own.
When happiness becomes a dashboard that must always show the right number, watching the gauge may compete with the everyday acts that help move it. These experiments suggest that competition can appear within minutes. Whether it becomes a durable pattern is the next question, not an answer the paper has already supplied.