Why does childhood seem to last forever, while adulthood flies by in the blink of an eye? It’s a common experience that many of us feel as the years go by. The subjective acceleration of time is a fascinating phenomenon with roots in both physics and psychology. It is often accompanied by deep reflection on one’s own life. For years, this moment was calledthe “midlife crisis,”associated with difficulties and self-doubt. However, modern psychology paints a completely different, remarkably optimistic picture. The awareness of time passing and transience need not be a cause for anxiety—on the contrary, it can become a powerful catalyst for a more mindful, fulfilling, and authentic life. In this article, I’ll examine the scientific foundations of time perception and show why middle age is, in fact, a time of greatest fulfillment, during which we can fully enjoy every day.
Why does time speed up?
The perception of time, though it seems intuitive, is a complex process that differs from objective, clock-measured time. Professor Adrian Bejan of Duke University, in his theory based on constructive law, suggests that the subjective acceleration of time with age has a physical basis. According to Bejan, our mind perceives reality through sequences of images that reflect sensory stimuli. The frequency with which these mental images are processed decreases with age. This is due to several physiological factors: the frequency of eye movements—which are crucial for gathering visual information—decreases, and there is a gradual degradation of neural pathways. Furthermore, as the brain develops and grows, sensory signals must travel longer distances, which also contributes to slower processing. As a result, the older mind receives fewer “frames per second” in its internal movie of life, which makes time seem to pass more quickly.
This physical perspective is complemented by a psychological approach. William James, the originator of the concept of the “stream of consciousness,” emphasized that perception is not a passive reception but an active process. Our consciousness is not a collection of static elements but a continuous, flowing stream of thoughts, sensations, and emotions. What we select from this stream and what we focus our attention on determines our subjective experience of time. David Eagleman, a neurobiologist at Stanford University, has expanded on these ideas, highlighting the role of memory and novelty in shaping our perception of time. Eagleman argues that time seems to pass more slowly when our brain is intensely encoding new memories. In childhood, almost everything is new and fascinating, which leads to the creation of a dense network of memories. Every day is full of discoveries, and this makes it seem longer in retrospect. In adulthood, however, we often fall into a routine. Repetitive experiences are “compressed” by the brain, and the lack of novelty causes days, weeks, and years to blend into a single, rapidly passing whole. Eagleman describes this as the “retrospective paradox”: a boring event seems to drag on while it’s happening, but it fades quickly from memory; an exciting vacation passes quickly, but we remember it as a long and rich period.
In addition, it is worth noting the so-called theory of the proportionality of time, which has its roots in the 19th-century reflections of the French philosopher Paul Janet (1877) and was subsequently popularized and developed by William James in his work *The Principles of Psychology* (1890). James, drawing on Janet’s work, deepened our understanding of the subjective perception of time. According to this theory, the perceived length of a given period (e.g., a year) is proportional to the total length of one’s life. For a three-year-old, one year accounts for as much as one-third of their life so far, which is an enormous span of time. For a forty-year-old, that same year is merely 2.5% of their life. This relative shift makes each subsequent year seem progressively shorter in comparison to the entirety of our life experience.
Another important mechanism is the way the brain handles repetitive tasks. Our brain is extremely efficient and strives to conserve energy. When we perform routine tasks—such as our daily commute to work—the brain stops intensively processing and registering every detail. This phenomenon, known as neural repetition suppression, causes stimuli that are well-known and predictable to be processed less intensively. This means that the route we’ve been taking for years “flies by” in our memory, whereas a trip to a new, unfamiliar place is full of new stimuli and details that the brain must process, making it seem to take longer. The brain, in a sense, “cuts out” repetitive fragments from our consciousness, which contributes to the impression that time passes more quickly. Thus, our subjective perception of time is not constant but changes dynamically with age, the intensity of our experiences, and the degree of novelty in the stimuli we encounter.
Middle Age: A Time of Prosperity and Conscious Choices
Middle age, often stereotypically and incorrectly referred to as a “crisis,” is in fact a period of extraordinary potential. It is a time for deep reflection on one’s life so far, one’s achievements, and the prospects for the future. Rather than being a moment of breakdown, it represents a crucial stage of transformation, during which we gain clarity about what truly matters to us.
Laura Carstensen’s concept, known as the Socioemotional Selectivity Theory (SST), sheds new light on this stage of life. This theory posits that as people become aware of the limited nature of their time on earth—which often occurs in middle age—they shift their goals and priorities. Younger people, with a long future ahead of them, often focus on exploration: acquiring knowledge, expanding their social networks, and preparing for future opportunities. In middle age and beyond, as “time shrinks,” there is a shift toward “emotional exploitation.” People begin to prioritize deep, meaningful relationships, seek ongoing emotional well-being, and focus on what brings them true joy and satisfaction. Awareness of the end, therefore, does not lead to despair, but to greater selectivity in one’s choices and a deeper appreciation of the moment.
Interestingly, psychological research suggests that middle age may be the period when we reach our peak potential. A Polish-Australian study has shown that the optimal combination of cognitive and personality traits occurs between the ages of 55 and 60. These findings challenge the common belief that we reach our intellectual peak in our 20s and 30s. In reality, middle age brings a unique integration of life experience, emotional stability, and still-high cognitive function. It is a time when people often reach their highest level of authenticity—they understand themselves and their values better and stop succumbing to external pressure. Middle age becomes a time of “mindfulness” that prompts us to reevaluate and consciously, joyfully shape the decades of life that lie ahead. Instead of fearing the passage of time, we can view it as a period in which we finally have the tools, experience, and courage to live exactly as we wish.
Awareness of Mortality and the Ethical Aspects of the Experience of Time
Recognizing our own mortality, though it can be uncomfortable, is a fundamental part of the human experience. In middle age, as we take stock of the past and look toward the future, this awareness often becomes more tangible. Rather than paralyzing us with fear, however, it can become a powerful driving force for action and for experiencing life more deeply.
Furthermore, the theory of the proportionality of time takes on a deeper dimension in the context of the ethical aspects of experiencing time. The awareness of life’s finitude, which often becomes more tangible in middle age, can lead to a reassessment of priorities. Instead of viewing time solely as a resource to be used optimally, people begin to treat it as a dimension of existence, a space for authenticity, for building deep relationships, and for giving life meaning. The subjective acceleration of time can thus become an impetus for ethical maturity and a more conscious shaping of one’s own life.
When we realize that our time on earth is limited, we naturally begin to question how we spend it. Questions about meaning, purpose, and legacy become more pressing. This reflection can lead us to reevaluate our priorities, let go of what does not serve our true selves, and focus on what truly matters. The responsibility for our own lives and choices becomes more apparent. Instead of putting our dreams off until later, we begin to act here and now. Awareness of the end can transform from a source of fear into a source of inspiration for a fuller, more authentic, and joyful life, in which every moment is precious.
How Can You “Slow Down” Time and Enjoy Life? Practical Strategies
Since our perception of time is subjective and depends on our brain activity and the richness of our experiences, we can consciously influence how we experience it. Here are a few practical strategies that will help you “slow down” time and find more joy in life, especially in middle age and beyond:
Introducing New Products and Variety
Actively seek out new experiences. Learn new things, travel, take up new hobbies, and meet new people. Every new experience forces the brain to process information more intensively and create new memories, which makes time seem to pass more slowly. This is a direct application of David Eagleman’s theory and a way to break out of the routine that the brain “cuts out.”
Practicing mindfulness
A conscious focus on the present moment—on sensations, thoughts, and emotions—without judgment. Mindfulness helps us step out of “autopilot” and fully experience each moment, making it feel more “intense” and memorable. Regular mindfulness practice can significantly change our subjective perception of time.
Investing in Deep Relationships
According to the Theory of Social-Emotional Selectivity, close, meaningful relationships become a priority in middle age. Spend time with people who inspire and support you, and with whom you feel like yourself. The quality of your relationships—not their quantity—leads to a greater sense of happiness and fulfillment.
Developing aBal anced TimePerspective (BTP)
The key to well-being is the ability to flexibly shift between the past, present, and future. Appreciate the positive experiences from the past that shape your identity. Plan for the future by setting goals and taking care of your health. Above all, however, live in the present moment, finding joy in the “here and now.” Avoid focusing too much on the negative aspects of the past or taking a fatalistic approach to the future, as these can lead to low mood.
Physical Activity and a Healthy Lifestyle
Regular physical activity, a balanced diet, and adequate sleep have a huge impact on brain function, including cognitive performance and the processing of sensory stimuli. By taking care of our bodies, we also take care of our minds, which can positively affect our perception of time and our overall well-being.
Reflection and Gratitude
Taking time regularly to reflect on our experiences and express gratitude for what we have helps us appreciate every moment. Keeping a gratitude journal or taking a moment each day to reflect on the positive aspects of the day can strengthen our sense of fulfillment and make life seem more fulfilling.
Summary
The perception of time is one of the most intriguing aspects of human experience. Although time seems to speed up as we age, science shows that this phenomenon holds enormous, positive potential. Understanding the mechanisms behind our subjective experience of time allows us to take control of it. Instead of passively watching time slip away, we can actively shape our perception by introducing new experiences, practicing mindfulness, and nurturing deep relationships. Middle age is not a time of crisis, but the beginning of a new, extraordinarily mindful phase of life. It is a moment when we can fully tap into the potential of maturity, draw on the wisdom of past years, and look to the future with courage, celebrating every moment—even the smallest one.
Bibliography
[1] Bejan, A. (2019). Why the Days Seem Shorter as We Get Older. European Review, 27(2), 187–194.
[2] James, W. (1890). The Principles of Psychology. Henry Holt and Company. (Introduction to the concept of the “stream of consciousness” and its role in perception).
[6] Janet, P. (1877). A Study of the Concept of Time.
[8] Załuski, W. (2017). Ethical Aspects of the Experience of Time. Jagiellonian University Press.
[9] Gulla, B., & Tucholska, K. (2019). The Psychology of Time in the Context of Health and Illness. Jagiellonian University Press.
PATIENT PRIVACY PROTECTION All statements, examples, and patient stories cited in the articles on this blog have been significantly altered, anonymized, and modified to prevent them from being linked to real patients. These changes include altering names, ages, genders, details of the situations, and other identifying characteristics. Any resemblance to actual persons is purely coincidental.
