The Self-Made Myth: Evidence-Based Look at Why Professionals Who ‘Do It Alone’ Quietly Underperform

Your professional network is doing more for your career than you think. Unfortunately, most professionals still carry around a different story about how success works: Put in the hours, master the craft, keep your head down, and the results will speak for themselves. Talent gets discovered. Merit gets rewarded.

It is a comforting story. It is also, according to a wide body of research spanning psychology, sociology, and organizational behavior, mostly wrong.

Not wrong in the sense that hard work and competence don’t matter. They do. But wrong in the sense that they are not sufficient, and the gap between “sufficient” and “what actually predicts advancement” is filled almost entirely by something professionals tend to underrate: Relationships. Networks. Sponsorship. Community. The people around you turn out to matter more than most of us are comfortable admitting, and the research on why we resist admitting it is just as interesting as the research on what happens when we do.

Why we overrate ourselves in the first place

Before getting into what the data says about careers and professional networking, it helps to understand why our self-assessment is so unreliable to begin with. This isn’t a character flaw unique to a few overconfident people. It’s how the human mind works by default.

Psychologists have documented a cluster of biases that all push in the same direction: toward believing we are more capable and more self-sufficient than we are. The self-serving bias means we credit our successes to skill and effort while blaming our failures on bad luck or circumstance. Illusory superiority means most people rate themselves as above average on desirable traits, which is a statistical impossibility once you look at the group as a whole. One frequently cited example: a large majority of drivers rate themselves as better than the average driver.

Then there’s the planning fallacy, first described by Daniel Kahneman and Amos Tversky^[1], which is the tendency to underestimate how long our own tasks will take, even when we have a track record of being wrong about this before. A well-known study found psychology students estimating their theses would take about 34 days on average^[2]. Most took considerably longer. What’s notable is that this bias is specific to our own projects. We’re often quite good at predicting how long someone else’s project will take. It’s only when we’re the one doing the work that optimism takes over.

Economist Robert Frank spent years studying what he calls the “self-made myth,” the idea that successful people vastly overstate how much of their success came from their own talent and effort, and understate the role of luck, timing, and the people who opened doors for them^[3]. In one experiment, Frank distributed two versions of the same success story: one where the protagonist credited only hard work, and one where the protagonist acknowledged help along the way and a measure of good fortune. People consistently thought more highly of the version that acknowledged help. We know, on some level, that nobody does it entirely alone. We just don’t like admitting it about ourselves.

None of this is about humility for its own sake. It’s about accuracy. If your internal model of how success works overweights individual effort and underweights relationships, you will make worse decisions about where to invest your time. That’s the practical stakes here.

What the research says about your professional network and career outcomes

This is where the career data gets specific, and it goes further than most professionals expect about what a professional network actually does for a career.

In 1973, sociologist Mark Granovetter published a paper called “The Strength of Weak Ties,” which has since become one of the most cited papers in the social sciences^[4]. His finding, based on a survey of workers who had recently changed jobs, was that people found out about their new roles more often through casual acquaintances than through close friends and family. Weak ties, it turns out, are more useful for career mobility than strong ties, because the people we’re closest to tend to know the same things we already know. It’s the person you see twice a year, the former classmate, the acquaintance from a conference, who is more likely to be sitting on information you don’t already have. This is the part of your professional network that quietly does the most work.

For decades this remained a compelling theory without a large-scale causal test. That changed in 2022, when a study published in the journal Science analyzed data from about twenty million LinkedIn users, over five years, tracking new connections and job changes at scale^[5]. The finding held up. Moderately weak ties were the most useful for helping people move into new jobs. This wasn’t a correlation researchers were reading into noisy survey data. It was a causal pattern, confirmed at a scale most sociologists could only have dreamed of forty years earlier.

There’s a second, more pointed distinction in the career literature, and it’s one professionals tend to blur: the difference between mentorship and sponsorship. Mentorship is advice. Sponsorship is action. A sponsor is someone senior enough, and invested enough, to actively use their own credibility to get you into rooms, onto shortlists, and in front of the decisions that shape your trajectory.

 

Research from Catalyst and from Sylvia Ann Hewlett’s work at the Center for Talent Innovation found that only a small minority of professionals, roughly one in five men and fewer women, report having an actual sponsor^[6]. Those who do are significantly more likely to ask for stretch assignments and raises, and significantly more likely to get them.

A large meta-analysis of mentoring research, led by Tammy Allen and published in the Journal of Applied Psychology, reviewed dozens of studies and found something worth sitting with^[7]. Mentoring reliably improves how satisfied people feel about their careers and their jobs. Its effect on the harder outcomes, compensation and promotion, is real but smaller. What that suggests is that having someone who gives you advice makes work feel better, but it’s the person actively advocating for you in rooms you’re not in that moves the needle on where you actually end up. Both matter. They are not the same thing, and professionals who have one often assume they have the other.

The myth of the lone genius

There’s a companion story to the self-made narrative, one that shows up specifically in professional and organizational life: the idea of the singular high performer who does their best work in isolation, and whose brilliance is diminished, not enhanced, by collaboration.

Organizational research has been chipping away at this for years. Amy Edmondson’s research on psychological safety, first published in 1999 and expanded on since, found that teams which felt safe enough to admit mistakes, ask questions, and raise concerns without fear of embarrassment consistently outperformed teams that didn’t, regardless of how individually talented their members were^[8]. In one of her early studies of hospital nursing teams, the better-performing teams actually reported more errors, not fewer, because their culture made it safe to surface problems early rather than hide them. Google ran its own internal study of what made teams effective, Project Aristotle, examining more than a hundred teams across roughly 250 different variables^[9]. Of everything they measured, psychological safety came out as the single strongest predictor of team performance, ahead of who was on the team, how experienced they were, or how the work was structured.

The implication for individual professionals is direct. Your output is not simply a function of your own skill. It is shaped by the quality of the environment you operate in, the feedback loops available to you, and whether you’re in a context where admitting what you don’t know is safe or costly. Professionals who isolate themselves, who avoid teams, feedback, and peer accountability because they believe their best work happens alone, are cutting themselves off from one of the strongest known predictors of performance.

Where underrating professional networking costs the most

Three groups show up repeatedly in the literature as the ones who pay the highest price for overestimating self-sufficiency.

The first is early-career professionals who treat mentorship and networking as optional extras rather than core parts of the job. Without a sponsor actively advocating for them, they are statistically less likely to receive the stretch assignments and promotions that compound over a career. This is not a small early disadvantage. Careers are path-dependent. The opportunities you get at year three shape the opportunities available to you at year eight.

The second is entrepreneurs and founders who resist collaboration, treating their venture as something they alone must carry. The data on solo versus team-founded companies is genuinely mixed, so this isn’t a simple case for finding a co-founder at all costs. But the pattern that shows up consistently in research on entrepreneurial wellbeing is more concerning: entrepreneurs report meaningfully higher rates of depression, anxiety, and burnout than the general working population. Isolation doesn’t just limit access to ideas and capital. It removes the people who would otherwise catch you when the pressure builds, which is often the same professional network that would have opened the opportunity in the first place.

The third is senior leaders, often the professionals who look most self-sufficient from the outside. Surveys of chief executives have repeatedly found that around half report feeling lonely in the role, and a majority say that loneliness actively hampers their decision-making^[10]. This is one of the more counterintuitive findings in the research. The higher people climb, the more self-sufficient they’re expected to appear, and the more isolated many of them actually become. It is precisely at the level where decisions carry the most weight that the peer accountability and outside perspective become hardest to access, and most costly to lose.

Practical Steps: Building a Professional Network

None of this is an argument to abandon individual effort, skill-building, or ambition. Competence still matters. What the research argues against is the specific belief that competence alone is what determines outcomes, and that investing time in relationships is somehow separate from, or secondary to, the “real work.”

A more accurate model treats relationship-building as part of the work itself, not a distraction from it. That means deliberately maintaining a wider circle of loose, professional acquaintances rather than only investing in the small circle you already know well. It means being honest about the difference between having someone who gives you advice and having someone who actively puts your name forward, and pursuing the second, not assuming the first is enough. It means treating the environments you choose to work in, the teams, the peer groups, the communities of practice, as a real input into your performance, not a backdrop to it. A deliberately built professional network is, in practice, one of the few career inputs that compounds instead of decaying.

The professionals who go furthest are rarely the ones who worked hardest in isolation. They are usually the ones who worked hard and were also visible to, connected with, and supported by people who could open doors they couldn’t open themselves. The self-made story is a good story. It’s just not, on the evidence, a very accurate one. And professionals who build their strategy around the accurate version tend to end up further along than the ones still trying to prove they didn’t need anyone’s help.

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