The awkward finding in Aekyoung Kim and Sam J. Maglio’s 2025 paper is not that happiness is a bad aim. It is that making happiness into a constant target may turn the mind into its own supervisor, checking, correcting, comparing, and trying again. That effort can have a cost.
In Applied Psychology: Health and Well-Being, Kim, of Jeonbuk National University, and Maglio, of the University of Toronto Scarborough and the Rotman School of Management, published a paper titled “Happiness depletes me: Seeking happiness impairs limited resources and self-regulation”. The paper was published online on January 30, 2025, and reports four studies testing whether the pursuit of happiness can leave people less able to regulate their own behaviour.
This is one study, not settled consensus. It should not be read as proof that wanting a good life is harmful, or that people should stop caring about their own happiness. The narrower claim is more interesting: when happiness becomes something a person is actively trying to force, the effort of pursuing it may consume attention and self-control that could otherwise support the ordinary behaviours from which well-being often grows.
The paradox is not new, but the mechanism is sharper
The idea that pursuing happiness can backfire has been around for a while in psychology. Earlier work has suggested that highly valuing happiness can sometimes make people more disappointed by ordinary emotional life, more self-monitoring, or more likely to feel that time is slipping away. Kim and Maglio themselves had previously published “Vanishing time in the pursuit of happiness”, a 2018 paper in Psychonomic Bulletin & Review that found pursuing happiness could make time feel scarcer.
The 2025 paper adds another possible mechanism. It asks whether trying to be happy drains the capacity people use to stay with difficult tasks, resist impulses, and follow through on goals. In the authors’ framing, happiness-seeking is not simply a pleasant orientation toward life. It can become a regulatory task: notice one’s current feeling, compare it with the desired feeling, adjust behaviour, monitor whether the adjustment worked, then repeat.
That loop can be effortful. Anyone who has tried to enjoy an event by repeatedly asking whether they are enjoying it will recognise the structure, even if the study itself is more formal. The attention shifts from the activity to the assessment of the activity. The question is no longer simply what is happening, but whether what is happening is producing enough happiness yet.
Kim and Maglio’s abstract describes the finding plainly. They report that trait-level happiness-seeking was associated with poorer self-regulation in both self-report and behaviour, and that experimental manipulations of happiness pursuit made participants more vulnerable to lapses in self-control or less persistent in a challenging task. Their conclusion is that repeated acts of happiness-seeking may contribute to a chronic depletion of regulatory resources, which in turn may feed daily failures of self-regulation and lower well-being.
What the studies appear to show
The paper reports four studies rather than one simple questionnaire. In the first two, the authors examined whether people who habitually seek happiness also report, or show, weaker self-regulation. In the later experiments, they manipulated the pursuit of happiness and compared it with control or accuracy-focused conditions.
The distinction matters. A correlation between wanting happiness and poorer self-control could mean many things. It could reflect personality, stress, culture, prior disappointment, or the possibility that people who are already finding life difficult become more focused on happiness. Experimental work cannot remove every interpretive problem, but it can test whether temporarily putting people into a happiness-seeking frame changes subsequent behaviour.
According to the Crossref record for the paper, one experiment found that people pushed toward happiness-seeking became more vulnerable to lapses in self-control behaviour. Another found that, compared with an accuracy-seeking condition, happiness-seeking led people to persist less in a challenging task. That is the heart of the claim: the pursuit itself may draw on the same capacities needed for the follow-through that often produces a steadier life.
Put more simply, if a person spends too much mental effort trying to feel happy right now, they may have less remaining patience for the dull, useful, happiness-supporting actions that do not feel rewarding in the moment. Calling a friend, finishing a difficult task, going outside, preparing food, keeping a promise, or staying with a demanding project can all require self-control. A forced happiness campaign may compete with those behaviours rather than support them.
The willpower language needs care
The word “depletion” carries baggage in psychology. For years, self-control was often discussed through a resource or muscle model, where exerting self-control in one task was said to reduce performance in a later task. That idea, often called ego depletion, became influential, then contested.
A large registered replication report published in Perspectives on Psychological Science in 2016, led by Martin S. Hagger and colleagues, found a very small ego-depletion effect with confidence intervals that included zero. That does not make Kim and Maglio’s paper irrelevant. It means the reader should treat “limited resources” as the model being tested and developed, not as a settled fact that willpower works like a battery draining in a perfectly measurable way.
This caution actually makes the new paper more useful, not less. The interesting part is not whether the mind contains a literal tank of happiness-chasing fuel. It is whether active attempts to manufacture happiness can shift attention and effort away from other forms of regulation. The language of resources may be debated, but the behavioural question remains concrete: after being encouraged to seek happiness, do people persist less, slip more, or regulate themselves differently?
That is also why the finding should not be flattened into a slogan. It is not “happiness makes you unhappy”. It is not “stop trying to improve your life”. It is not a scientific endorsement of passivity. The paper points to a narrower trap: turning happiness into a constant self-assessment project may make the conditions for happiness harder to maintain.
Why forcing happiness can miss the point
Many experiences that support well-being are indirect. They arrive through attention to something else: a relationship, a craft, a responsibility, a walk, a meal, a shared joke, a piece of work finished properly. The positive feeling is real, but it is not always improved by staring directly at it.
The same pattern appears in ordinary life. A person who asks throughout dinner whether they are having enough fun may be less present at the table. A person who turns rest into a performance metric may return from the weekend more tired. A person who treats every activity as a test of whether it is making them happier may lose contact with the activity itself.
Kim and Maglio’s study gives that familiar pattern a behavioural frame. The problem is not the wish to be happy. The problem is constant emotional optimisation. When happiness becomes another thing to achieve, monitor, and score, it can become work of its own. And if that work competes with self-control, the result can be the strange failure described in the paper: people chase the state they want while weakening the habits that might help create it.
The careful takeaway is therefore modest. Happiness may be better understood less as an object to seize than as a condition that often emerges from other commitments. The moment people make it the main object of effort, they may introduce a second task into every task: not just living the moment, but checking whether the moment is giving them enough.
