What the data actually shows
Much of how we judge ourselves runs through comparison. Leon Festinger's 1954 theory of social comparison established that, in the absence of objective standards, people evaluate themselves against others — and 'am I successful?' has almost no objective standard, so we reach for other people as the measure. Crucially, who you compare against (your reference group) heavily shapes the answer, and that group is mostly assigned to you by circumstance rather than chosen.
The idea of reference groups — the specific set of people we treat as the relevant comparison — is long-established in sociology (work associated with Robert Merton and others). What feels like 'normal' or 'successful' is calibrated to whichever group you happen to measure against: a salary that feels like success among one circle can feel like failure in another, with no change in the actual number. The metric travels with the crowd, not with the achievement.
Definitions of success also vary systematically by culture and by class. Cross-cultural psychology (for example, work associated with Hazel Markus and Shinobu Kitayama on independent versus interdependent self-construals) finds that what people treat as a successful, worthy life differs across cultural contexts — more individual achievement in some, more relational and communal markers in others. And sociological work on class and 'cultural capital' (associated with Pierre Bourdieu) describes how families transmit particular ideas of what is worth wanting, which is one reason siblings raised together often share a definition of success they never explicitly discussed.
Why this feels different from how it actually is
Inherited metrics feel like personal convictions because we absorbed them early and never saw them imposed. A belief installed in childhood — that a certain career, income, or milestone is what a good life looks like — feels like something you concluded yourself, not something you were handed, which is exactly why it's so rarely questioned.
Media compounds this by making a narrow version of success feel like the only version. The visible, marketed picture of 'making it' is heavily skewed toward wealth, status, and image, because those are the versions that get displayed and rewarded. So even people whose private values point elsewhere can end up measuring themselves against a script they didn't write and don't fully endorse.
And the reference group is invisible as a choice. You don't experience yourself as 'deciding' to compare against your colleagues, your old classmates, or the people in your feed — they're just there, and the comparison happens automatically. Because the yardstick feels like simply 'how things are,' it's easy to mistake a local, contingent definition of success for a universal one.
By the time most people ask 'am I successful?', the definition of success they're using has already been installed by their environment.
What the research says to do about it
The most useful move the research supports is making the inherited metric visible — naming where your definition of success actually came from (family, class, a particular reference group, media) so you can decide consciously whether to keep it. You can't choose a yardstick you can't see, and most people have never looked at theirs directly.
Examining and, where appropriate, widening or changing your reference group tends to shift the felt verdict without changing your circumstances. Because comparison is reference-group-dependent, deliberately choosing more relevant comparisons — or comparing to your own past self rather than to a curated peer set — can change whether the same life reads as success or shortfall.
Work on values and meaning suggests that defining success in terms of things you actually endorse, rather than inherited status markers, is associated with more durable satisfaction. The research on extrinsic versus intrinsic goals (associated with Tim Kasser and Richard Ryan) finds that heavily prioritising wealth, image, and status goals is, on average, linked to lower wellbeing than prioritising relationships, growth, and contribution — a hint that the default cultural script and a self-chosen one can point in different directions.
What the research says does not help
Chasing the inherited definition harder rarely settles the question, because if the metric was never yours, hitting it tends to feel hollow rather than complete. People who reach a status milestone they were 'supposed' to want often report the goalposts simply moving, since the underlying definition was external and open-ended.
Adopting someone else's published 'real' definition of success wholesale — swapping one borrowed script for another — doesn't reliably help either. The point the research supports is not that a particular definition is correct, but that an unexamined, inherited one is worth questioning; replacing it with another unexamined one repeats the original problem.
Trying to opt out of all comparison and metrics is largely unrealistic, since social comparison is a built-in process, not a habit you can simply switch off. The evidence favours redirecting and consciously choosing your reference points and metrics over attempting to eliminate them entirely.
The same objective life can read as success or shortfall depending entirely on the yardstick applied — and the yardstick is mostly assigned, not chosen.
What this looks like in real life
The same salary, two verdicts
A salary that feels like clear success among one circle of friends can feel like falling short in another, with no change in the actual number. That flip is the point: the metric travels with the crowd you measure against, not with the achievement itself — which is exactly what a reference-group-dependent standard looks like in daily life.
The definition you never discussed
Siblings raised in the same home often share a detailed idea of what a good life looks like — a certain career, income, or milestone — despite never sitting down to agree on it. That shared script is inherited cultural capital: installed early, it feels like a personal conviction rather than something handed down, which is why it so rarely gets questioned.
Real numbers in context
This is a topic where the honest evidence is conceptual and cross-cultural rather than a matter of clean headline numbers, so it's worth stating plainly: there is no single statistic for 'how much of our idea of success is inherited.' What the research robustly supports is the mechanism — that success is socially constructed, that comparison is reference-group-dependent, and that definitions of a worthy life vary systematically across cultures and class backgrounds.
The practical, non-numeric takeaway is that the same objective life can read as success or shortfall depending entirely on the yardstick applied — and the yardstick is mostly assigned by your environment, not chosen by you. That variability is itself the finding: if success were an objective fact, it wouldn't shift so dramatically with the crowd, the country, and the era you happen to measure against.