How to Test a Career Before You Choose It

A job description is the highlight reel. Harvard psychologists showed we systematically misjudge how much we will enjoy something new. Three methods that give you real experience instead of imagination.

Read a job description and you will find a surgeon who "saves lives and makes high-stakes decisions." A marketer who "builds brands and works with data." A developer who "solves interesting problems and works remotely." All true — and all marketing. Job descriptions are written around the best moments of a role, not its average Tuesday.

Why imagination gets it wrong

When you picture yourself in a new career, your brain does not run a balanced simulation. Psychologists Timothy Wilson and Daniel Gilbert called this the impact bias — in their review in Current Directions in Psychological Science (2005), they showed that people consistently overestimate the emotional intensity of future events. The reason is simple: imagination focuses on the most salient part of a situation and quietly drops everything else — the routine, the bureaucracy, the sixth status meeting in a row.

Gilbert develops this in Stumbling on Happiness (2006): we have no direct channel to what it feels like to be in a situation we have never been in. We build a simulation. And the architect simulation tends to include the beautiful render on the screen — not the three months of client revisions that come with it.

There is a second layer too. Our image of a profession is usually drawn from an unrepresentative sample: a TV show, one person's story, one vivid example. That is why people who choose a career by its title so often find they are disappointed not by what they do, but by how much of their time goes toward something entirely different.

Three methods that replace simulation with a real signal

Career exploration is not gathering more descriptions. It is getting first-hand exposure in conditions as close as possible to the real thing.

Informational interview. Find a practitioner and ask for 20 to 40 minutes. The goal is not to hear how rewarding it is to be a lawyer, but to learn what a typical workday looks like and what is most frustrating about it. The most useful question: "Describe the worst day you had last week." That is where the real profession comes through — not the curated version.

Job shadowing. Spend a working day with a specialist — observing, sometimes participating. A study by Ieva Margeviča-Grinberga and Aija Kalēja from the University of Latvia, published in Frontiers in Sociology in 2025, tracked adults through a 12-month professional development program built around job shadowing: 68% reported a substantial increase in confidence about their career direction. And another figure — 28% made a complete career transition by the end. Not from disappointment: they simply found something more accurate than what they had imagined.

28% of job-shadowing participants made a complete career transition — not because they were let down, but because they found something that fit better than their forecast.

Micro-project or volunteering. Take part in a small piece of real work — even for an hour or a single deliverable. This is the best test of the three: not "do I like the idea of this career," but "do I like doing the specific things that make it up."

How to run an informational interview in twenty minutes

Finding someone is easier than it seems. LinkedIn, professional communities, Discord or Slack channels for the field, alumni from your school or university. A two-sentence message: "I am exploring a few directions and want to understand what X looks like from the inside. Could you spare 20 minutes?" Refusals are rarer than people expect — professionals who enjoy their work are generally happy to talk about it.

Questions that give you the signal you need:

• What does your typical day look like — not your best day, just an average one?
• What frustrates you most about this field?
• What did you not know how to do when you started — and what does nobody teach?
• If you were choosing again, what would you do differently?

That last question is the most valuable. It surfaces what job descriptions leave out.

Why someone else's experience beats your own imagination

Gilbert points to a counterintuitive finding: the best predictor of how you will feel in a new situation is not your own imagination — it is the reported experience of a random person already in that situation. In his team's experiments, giving participants a description of someone else's actual experience (rather than asking them to forecast their own) improved prediction accuracy.

For career choice, that means: talking to five practitioners gives a more accurate forecast of "will I enjoy this" than the same number of hours spent thinking about yourself. A career aptitude test is a good starting point — it generates a list of directions. Exploration is the next step: the one that checks that list against reality.

Sources

1. Wilson, T. D., & Gilbert, D. T. (2005). Affective Forecasting: Knowing What to Want. Current Directions in Psychological Science, 14(3), 131–134. sagepub.com
2. Gilbert, D. T. (2006). Stumbling on Happiness. Knopf.
3. Margeviča-Grinberga, I., & Kalēja, A. (2025). Job shadowing adults' non-formal education programme through social-emotional learning. Frontiers in Sociology. pmc.ncbi.nlm.nih.gov/articles/PMC12419074

This article is for educational purposes and does not constitute professional career counselling.