There is no shortage of programs or practices that promise to increase happiness. People may meditate for 30 minutes every morning, block off full evenings to deeply connect with close friends or commit to a 12-week daily gratitude journaling exercise. Some of these activities, which emerged from the field of positive psychology, can reliably and sustainably boost psychological well-being, a technical term for happiness in life. But let’s be honest. Most people feel too busy, tired or overwhelmed to add on—and then keep up with—new and demanding routines in day-to-day life.
What if finding more happiness did not require a major time commitment or lifestyle overhaul? What if, instead, it could come from simple, brief actions such as texting a genuine “thank you” to a colleague, asking a friend to share something that made them feel proud, looking at the sky’s vastness with wonder, or marveling at the intricate details of a wildflower?
A group of scientists set out to explore this question by investigating whether brief daily activities, or “micro acts,” can affect overall happiness in life. They also investigated how doing happiness-promoting micro acts might ripple outward in ways that enhance mutual care, compassion, and generosity.
This research began as a spin-off from a film called Mission: Joy—Finding Happiness in Troubled Times (see https://missionjoy.org) in which the 14th Dalai Lama and the late archbishop Desmond Tutu talked about their friendship and offered lessons on creating joy for oneself and others regardless of circumstances. The film’s producer and co-director Peggy Callahan and impact producer Jolene Smith teamed up with psychologists Elissa Epel and Emiliana Simon-Thomas to develop a meaningful way for people to act on the film’s messages.
The result was a free, globally available online resource called the Big Joy Project (see Freebie section below) carrried out from the University of California, Berkeley. People who signed up for this project received a daily email or text that included a link to instructions for a five- to 10-minute micro act, defined as a short, simple activity for building joy. The opening micro act, for example, invited participants to listen to a 42-second audio clip of different people laughing, including the Dalai Lama and Desmond Tutu. It’s a simple, uplifting moment designed to elicit a smile or chuckle. The rest of the activities are delivered each day for seven days and included making a gratitude list, doing something kind, reflecting on a core value, feeling loving kindness (or a state of tenderness and consideration to others), reframing a difficult experience, celebrating another person’s joy, and watching an awe-inspiring video.
People who joined the project also answered several questions along the way. On a scale from “not at all” to “a lot,” they rated how positively and how negatively they felt before starting and after completing each micro act. People could also reflect on their experience doing each micro act in writing both just afterward and during an evening check-in. Most people reported that they found the micro acts easy and appealing to do. Since its launch, more than 112,000 people across more than 215 countries or territories have joined the Big Joy Project and have done more than 450,000 micro acts. These numbers make it the largest-ever community science project on joy in the world.
The research team gradually expanded with collaborators at several institutions, and together the analysed the data. In two recently published articles, the scientists reported that the micro acts add up in meaningful ways. They compared people’s responses to 18 questions presented before starting the Big Joy Project with most of those questions presented again at the end of seven days. Analysing responses from 17,598 people from 169 countries and territories, they found that people reported higher emotional well-being, more positive emotions, lower stress, and even modest improvements in sleep quality and physical health.
It took surprisingly little time and effort for people to feel better. Although many well-being programs span eight weeks or more, the Big Joy project yielded meaningful changes after just one week. And the more of the micro acts people completed, the more their happiness improved.
Importantly, the benefits weren’t limited to those who had more privilege or access to resources and opportunities. People who reported greater levels of social disadvantage, such as increased financial strain, lower educational attainment and lower subjective social status, often noted greater boosts to well-being as well.
The Big Joy Project also increased people’s self-reported prosociality—that is, their innate impulse to help others and connect with communities. People said they felt more inclined to reach out, offer support and attend to the needs of people around them after completing the project. Once again, there was a clear “dose-response” relationship: the more micro acts a person did, the greater their improvement in prosocial tendencies was.
The biggest increases in this impulse were observed among the least expected groups. Men, whose prosociality scores were lower before beginning the project, showed the largest improvement after seven days. Increases were also more pronounced among people who rated themselves lower in socioeconomic status and for those living in Global South countries. These results suggest happiness-promoting micro acts can have a more pronounced effect where they may be needed most.
In a world grappling with loneliness, burnout and ideological division, small reminders of inspiration, kindness and connection can be powerful. When people experience more joy in their lives, they also tend to be more generous with their time and resources. And when people want to give more to one another, everyone benefits.
Certainly, there is still more for scientists to investigate. For example, the work relies on people reporting their own progress and feelings. It would also be interesting to run the study again but with a subgroup of “control” participants who do not complete daily micro acts. However, for the time being, the current studies do make a compelling case for how modest steps can have remarkable benefits.
Why do such small actions work? The researchers think it’s because they activate the same psychological ingredients as longer, more involved programs: they boost positive emotions, inspire feelings of connection and help people feel more aligned with what brings them meaning and purpose. Indeed, many of these behaviours—practicing gratitude and being more sociable, for instance—have been well studied for years and found to be beneficial to the doer or giver. But the Big Joy Project is special in its simplicity. It’s low key. People who participated in Big Joy also developed a stronger sense of agency—a feeling that they can control their happiness and that they don’t have to wait for good things to happen to feel happy.
Perhaps that’s what makes the project so powerful. People mired in busyness wait impatiently for a promotion, holiday, new car/house/handbag or entertaining event, expecting to finally feel good. But this project teaches a different lesson. Simple, daily micro acts can ratchet up happiness in a more empowering way. Deliberately finding gratitude, offering kindness or giving ourselves moments to experience awe are not passive acts. They are courageous and effective ways of gently steering your own ship, even through stormy times.
REFERENCES:
D. Folk & E. Dunn. How Can People Become Happier? A Systematic Review of Preregistered Experiments.Annu. Rev. Psychol. 2024. 75:467–93. https://doi.org/10.1146/annurev-psych-022423-030818
D. Guevarra et al. Scaling a Brief Digital Well-Being Intervention (the Big Joy Project) and Sociodemographic Moderators: Single-Group Pre-Post Study. J Med Internet Res 2025, 27:e72053. https://doi.org/10.2196/72053
H. Goel et al. Promoting Prosociality via Micro-acts of Joy: A Large-Scale Well-Being Intervention Study. Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems (CHI ’25).Article 721, 1–28. https://doi.org/10.1145/3706598.3713947