The first time you run five kilometres without stopping, you remember it.
You remember the moment you realised you might actually finish, the temptation to slow down during the final stretch, and the satisfaction of looking at your watch afterwards. Five kilometres. A few weeks earlier, you couldn't do that. Now you can.
A year later, you're running the same distance several minutes faster. You're fitter, more consistent, and capable of things that would have seemed ridiculous when you started. But this morning, your watch tells you that you were twenty seconds slower than last Tuesday, and somehow that's enough to spoil the feeling.
The second run is objectively better than the first. Almost every number proves it. Yet the person who struggled through those original five kilometres might have been considerably happier with the result.
Somewhere along the way, improvement stopped feeling quite so extraordinary.
The Strange Advantage of Knowing Your Numbers
There's a reason people become attached to tracking their progress. Without some kind of record, gradual improvement can be surprisingly difficult to recognise.
Think about learning a language. You might spend months feeling as though you're getting nowhere because every conversation still contains words you don't understand. Then you revisit something you struggled to read six months earlier and realise you can now understand almost all of it. The improvement was happening long before you noticed.
Running apps, savings trackers and other forms of personal measurement make those changes easier to see. They offer something more reliable than a vague impression of whether we're getting anywhere.
In 2016, psychologist Benjamin Harkin and colleagues published a meta-analysis of 138 studies involving nearly 20,000 participants. They found that interventions encouraging people to monitor their progress improved goal attainment, with stronger effects when progress was recorded or reported to others [1].
For a new runner, watching the distance increase from two kilometres to three, then four, can be genuinely encouraging. Each improvement makes the next goal feel a little more realistic. The record provides evidence that the effort is doing something.
But what happens when the numbers stop being something you look at after an activity and become something you're thinking about while doing it?
When Doing More Starts to Feel Like Less
Imagine reading a novel on a quiet Sunday afternoon. You're enjoying it, so you keep turning the pages without thinking much about how many you've read.
Now imagine an app starts counting those pages. It shows your daily total, how quickly you're reading and whether you're ahead of yesterday's pace.
You might read more. You might even enjoy watching the number climb. But a chapter that once felt absorbing could start to feel like progress towards a target. Stopping after twenty pages might seem disappointing, even if those twenty pages were wonderful.
Psychologist Jordan Etkin investigated this tension in a series of experiments published in the Journal of Consumer Research in 2016 [2]. Across activities including walking and reading, quantifying an activity could increase how much people did while reducing how much they enjoyed it. The research suggested that measurement can make an enjoyable activity feel more like work.
That's a peculiar trade-off: doing more of something without necessarily getting more pleasure from it.
It doesn't mean tracking inevitably ruins an activity. Etkin's experiments show what can happen under particular conditions, not that people who wear fitness trackers will become less happy over time. For someone training for a marathon, focusing on pace and distance might be exactly what they want. For someone who started running to clear their head after work, those same numbers might compete with the reason they enjoyed it.
And even when reaching a target still feels wonderful, the target itself may not stay where we left it.
The Goal That Quietly Became the Minimum
Suppose you've been saving money for a holiday.
At first, having $1,000 set aside feels like a significant achievement. You remember how difficult it was to save the first few hundred dollars, so reaching four figures is exciting. Eventually, you save $5,000.
You might expect that amount to feel five times as satisfying, although emotions don't work like bank balances. Instead, you start thinking about how much more secure you'd feel with $10,000.
There's nothing inherently wrong with raising the target. Your circumstances might have changed, or you might have discovered that you're capable of saving more than you thought. What's interesting is how quickly the original milestone can lose its emotional weight.
Economists Marco Bertoni and Luca Corazzini examined the relationship between aspirations and life satisfaction using longitudinal survey data [3]. Their analysis suggests that aspirations can move upwards after people exceed their targets, without an equivalent downward adjustment when they fall short. This is observational evidence about aspirations, not proof that tracking causes them to rise.
The result is an intriguing asymmetry. Achieving something can make us feel successful while also changing what we expect to achieve next.
When finishing five kilometres was the runner's goal, finishing was thrilling. Once that distance became routine, attention shifted towards pace, then perhaps towards beating a personal best. What once seemed extraordinary became the starting point for the next ambition.
There's a difference between becoming accustomed to an achievement and expecting more from yourself. Research on hedonic adaptation considers both the fading emotional impact of positive experiences and the role of rising aspirations [4]. One changes how exciting an experience feels; the other changes the standard against which you evaluate it.
Neither process means ambition is a mistake. But together they help explain why a life can contain more achievements than it used to without every achievement feeling as remarkable as we once imagined.
What a Number Can Mean
So is the solution to put the watch away? Not necessarily. That would miss something important about why people record their lives in the first place.
In a 2020 qualitative study, Fiona Spotswood, Avi Shankar and Lukasz Piwek explored how recreational runners used communal self-tracking, including Strava, to give their runs social and emotional meaning [5]. Recording and sharing an activity could make effort visible to other people, inviting recognition that a bare distance or pace might not convey on its own.
Consider someone returning to exercise after several months away. Their first run might be short and slow. Viewed without context, the numbers seem unremarkable. To the person rebuilding a routine, they might represent a difficult and meaningful step forward. Sharing that run with people who understand the effort can make the achievement feel seen.
This isn't evidence that social tracking makes everyone happier. It does suggest that measurement isn't limited to turning experiences into targets. A record can also become a way of recognising effort, sharing a moment or marking a return to something that matters.
The same distance can be disappointing on one day and worth celebrating on another. Understanding why requires more than reading the distance itself.
When Your Best Result Is the Wrong Comparison
Imagine someone who has been learning to play tennis for a year. Most weekends, they play reasonably well, occasionally missing shots they thought they'd mastered months ago. Then one afternoon, everything seems to work. Their serves land where they want them, difficult returns come off, and they beat an opponent they usually struggle against.
Naturally, they remember that match.
The following weekend, they play more like their usual self. Their performance hasn't necessarily deteriorated, but it feels disappointing because they're comparing it with an afternoon when almost everything went right.
That exceptional match might reflect genuine improvement. It might also have benefited from an unusually good day, a tired opponent or a few difficult shots that happened to land perfectly. One performance can't tell us which explanation is right.
A personal best shows what you've achieved at least once. It doesn't necessarily describe what you can reliably reproduce. For someone developing a skill, the pattern across many attempts is often more informative than the single performance that stands out in memory.
Gambling makes that distinction sharper. Imagine someone who records their pokie sessions and has one unusually large win. Later, a smaller win feels underwhelming by comparison, even though it would once have been a welcome result. The earlier outcome has become a reference point, but it hasn't made another big win more likely.
Unlike a strong tennis performance, a big result on a chance-based pokie isn't evidence that the player has developed a skill they can repeat. The comparison may feel compelling precisely because the number was memorable, not because it says anything useful about what comes next. This is an illustrative scenario, rather than a finding established by the studies above.
There's an irony here: the more exceptional the result we remember, the easier it can become for an ordinary result to feel disappointing. Sometimes the number we use to judge our progress is the least representative one in the record.
The Numbers Don't Remember Where You Started
Think about the runner from the beginning again. A year ago, five kilometres was something they hoped they might one day be able to do. Now they can run it without much thought, and they're frustrated because today's time was twenty seconds slower than last Tuesday's.
The frustration is real, and so is the progress. Neither cancels out the other.
What's strange is how quietly the meaning of an achievement can change. We work towards a version of ourselves who can do something that currently feels extraordinary. Then, once we become that person, the extraordinary becomes familiar. We set another target, and the person we once wanted to be starts to look like someone who still has work to do.
There's nothing wrong with wanting the next thing. But it's worth noticing when the excitement we expected to feel on arrival has already moved somewhere further down the road.
Your watch can show you exactly how much faster you've become. It can preserve every split, every personal best and every kilometre you ran to get here. What it can't preserve is the anticipation of the person who first wondered whether five kilometres was even possible.
Perhaps that's the oddest thing about progress: we can spend years becoming someone our earlier selves would have been amazed by, only to reach that point and barely notice we've arrived.
References
[1] Harkin, B., Webb, T. L., Chang, B. P. I., et al. (2016). Does monitoring goal progress promote goal attainment? A meta-analysis of the experimental evidence. Psychological Bulletin, 142(2), 198–229. https://doi.org/10.1037/bul0000025
[2] Etkin, J. (2016). The hidden cost of personal quantification. Journal of Consumer Research, 42(6), 967–984. https://doi.org/10.1093/jcr/ucv095
[3] Bertoni, M., & Corazzini, L. (2015). Life satisfaction and endogenous aspirations. SOEPpapers on Multidisciplinary Panel Data Research, No. 761. https://doi.org/10.2139/ssrn.2615768
[4] Sheldon, K. M., & Lyubomirsky, S. (2012). The challenge of staying happier: Testing the Hedonic Adaptation Prevention model. Personality and Social Psychology Bulletin, 38(5), 670–680. https://doi.org/10.1177/0146167212436400
[5] Spotswood, F., Shankar, A., & Piwek, L. (2020). Changing emotional engagement with running through communal self-tracking: The implications of 'teleoaffective shaping' for public health. Sociology of Health & Illness, 42(4), 772–788. https://doi.org/10.1111/1467-9566.13057