Why We Keep Measuring Ourselves Against Other People

There is a curious moment that follows achievement.

You get the promotion you have been working towards. For a while, it feels marvellous. Then you discover that someone you started with is already a director.

You finally run 10 kilometres. You feel proud. Then your friend announces they have entered a marathon.

You buy your first home. You open Instagram and find yourself admiring someone's second.

Nothing about your achievement has changed. Yet somehow, the meaning of it has.

This is the peculiar psychology of social comparison: the human tendency to evaluate ourselves by looking at other people. It is hardly a modern invention, and it is not simply a side effect of social media. Long before smartphones and carefully curated feeds, people were working out who was clever, attractive, successful, respected or simply doing all right by observing those around them.

What has changed is the sheer number of people available for comparison.

And perhaps more importantly, the standards themselves keep moving.

The human need for a reference point

In 1954, psychologist Leon Festinger proposed what became known as social comparison theory. His basic observation was remarkably straightforward: people have a tendency to evaluate their own abilities and opinions, particularly when there is no objective measure available.

Consider something as vague as being “successful”.

There is no scientific instrument for it. A payslip can tell you what you earn, but not whether you are doing well relative to the life you imagined for yourself. A job title can describe your position, but not whether you feel you have achieved enough.

So we look around.

A young lawyer compares herself with colleagues. A new parent watches other families. A university student checks what former classmates are doing. A middle-aged professional quietly wonders whether everyone else has somehow understood the rules of adulthood.

The comparison provides information.

It also creates a problem: there is almost always another comparison to make.

The moving benchmark

Imagine someone who earns £40,000 a year and has spent years hoping to reach that figure.

They do.

For a moment, £40,000 represents success. Then they learn that people in their profession with similar experience earn £55,000. The new figure becomes salient.

Three things can happen.

They might decide to pursue the higher salary. They might conclude that money is not the measure they want to use. Or they might begin to feel that £40,000 is somehow inadequate, despite having been their original goal.

The interesting part is that the number itself has not changed.

The reference point has.

Research into comparison standards suggests that familiar or repeatedly activated people can become habitual benchmarks. Once one standard becomes ordinary, attention can shift towards another.

This helps explain why achievement does not necessarily terminate comparison.

The finish line is not painted on the road. We keep moving it.

Three everyday examples

Career: A promotion that once represented the destination becomes merely the next rung when colleagues begin reaching senior positions.

Fitness: Improving from a 5K to a 10K can feel transformative until marathon runners become the relevant comparison group.

Money: A salary that once felt comfortable can begin to seem inadequate after spending time among people with substantially higher incomes.

The psychology is less about greed than about context. We rarely experience an outcome in isolation. We interpret it against a social landscape.

When someone else's success feels personal

Not every comparison has equal emotional force.

A stranger's extraordinary success may barely register. Your friend's success can be different.

Suppose your closest friend gets the job you desperately wanted. You may genuinely be pleased for them and still feel a small sting.

This apparent contradiction is important.

Research associated with psychologist Stephen Tesser's self-evaluation maintenance model suggests that another person's performance can affect our own self-evaluation particularly strongly when the person is close to us and the domain matters to our identity.

Three cases illustrate the difference.

A stranger: A bestselling novelist sells a million copies. Interesting, perhaps, but largely irrelevant.

A colleague: Someone hired after you becomes a senior manager first. The comparison feels considerably closer.

A sibling: Your younger sister buys a house while you are still renting. Suddenly the comparison carries family expectations, age and money with it.

The other person's achievement has not become objectively more impressive. It has become more psychologically relevant.

And yet comparison does not always produce envy or inadequacy.

A successful friend can also become evidence of what is possible. A talented colleague can provide a model to learn from. Someone else's progress can make our own ambitions clearer.

That is one of the field's more useful complications: upward comparison can produce either contrast or inspiration.

The question is not simply, “Who is doing better?”

It is, “What does their success mean to me?”

The strange usefulness of comparison

It is tempting to regard comparison as a modern psychological nuisance, something we should eliminate in order to become happier.

But that would miss its practical value.

A child learns partly by observing other children. A junior employee learns workplace norms by watching colleagues. A beginner at the gym discovers what is achievable by seeing people slightly ahead of them.

Three small examples make the distinction clear.

The aspiring cook watches a more experienced chef and picks up techniques that would otherwise take years to discover.

The new manager observes how an effective colleague handles difficult meetings and gains a behavioural template.

The first-time marathon runner sees someone with a similar starting point complete the distance and thinks, Perhaps I could do that.

Here, comparison provides information rather than a verdict.

The trouble begins when the question changes from What can I learn from this person? to What does this person's success prove about me?

Then came the infinite comparison machine

Social media did not invent social comparison. It industrialised it.

Historically, our comparison groups were constrained by geography and circumstance. You knew the people at school, work, church, the local club or down the road.

Now a phone can introduce thousands of potential reference points before breakfast.

Consider three familiar feeds.

LinkedIn: promotion after promotion, new ventures, awards and announcements. There is little room for the person who spent Wednesday wondering whether they had chosen the wrong career.

Instagram: holidays, kitchens, weddings, wardrobes and carefully selected moments of domestic harmony.

Fitness platforms: personal bests, races, transformations and extraordinary routines sitting beside the record of your own rather ordinary Tuesday jog.

The important point is not that these platforms are inherently harmful. Research increasingly suggests a more complicated picture: upward comparison online is associated with poorer psychological outcomes in many contexts, but the effects vary according to the individual, the comparison target and how the comparison is interpreted.

The technology has changed the density and frequency of comparison.

It has made the reference group effectively bottomless.

Three kinds of comparison, three different consequences

It is useful to imagine three people looking at the same successful stranger online.

Person one: “I could learn from her.”
The comparison creates inspiration.

Person two: “I'll never have a life like that.”
The comparison creates distance.

Person three: “Why isn't my life like hers?”
The comparison becomes a judgement about the self.

Same photograph. Three psychological responses.

This is why blanket claims about comparison tend to collapse under scrutiny.

Comparison itself is neither inherently healthy nor inherently destructive. Its consequences depend on the relationship between the person, the target and the dimension being compared.

A useful comparison can expand the imagination.

A corrosive one can shrink it.

The comparison trap is not simply about wanting more

There is a deeper paradox here.

People often assume that comparison is driven by dissatisfaction: I compare myself because I am unhappy with what I have.

Sometimes that is true.

But the causal direction can also run the other way. Comparison can create dissatisfaction where there was previously none.

A person may be perfectly content with a modest holiday until they see everyone else's luxury trips. A salary can feel adequate until it is placed beside a colleague's. A body can feel perfectly ordinary until it becomes an object of comparison.

The reference point changes the experience of the thing itself.

This is why the pursuit of “enough” can be surprisingly difficult.

There is no universally recognised number for enough money, enough achievement, enough beauty or enough status.

There is always another person.

So what would happen if we stopped looking sideways?

It is an interesting thought experiment.

Imagine waking tomorrow without access to anyone else's achievements.

No follower counts. No professional announcements. No holiday photographs. No salary comparisons. No photographs of renovated kitchens. No former schoolmate appearing unexpectedly successful on your screen.

You would still have ambitions.

You would still have disappointments.

You would still know what you wanted to improve.

But some of the questions might disappear.

Am I behind?

Behind whom?

Have I achieved enough?

Enough according to what?

This may be the most useful way to think about social comparison. The objective is not necessarily to stop comparing. That is probably neither realistic nor desirable.

Comparison is part of how human beings learn where they stand.

The more interesting task is recognising when a reference point has quietly become a verdict.

Because there is no final scoreboard. There is no moment at which the mind receives an official certificate declaring that you are sufficiently successful, attractive, wealthy, interesting or accomplished.

Someone will always be ahead in something.

And that is precisely why the comparison can continue indefinitely.

The human mind does not merely ask, How am I doing?

It asks, Compared with whom?

And there will always be someone.

Human Behaviour