The Biggest Career Mistakes People Make Before 30 | Sandeep Das
Sandeep Das's 5 Cheat Codes for Your 20s (And Why the Usual Advice Is Wrong)
"Follow your passion." "You only live once." "Dream big." "Find yourself." Sandeep Das got all of this advice in his 20s — and by the time he reached his 30s, he'd concluded most of it was terrible. In a short, deliberately contrarian talk, he lays out five "cheat codes" for what to actually do in your twenties, each roughly the opposite of what the internet tends to preach. All five, he admits, are mistakes he made himself.
This post is translated and condensed from Sandeep Das's Hindi-language video. The ideas are his.
Cheat Code 1: Gather Asymmetric Information
Das's first principle is to spend your 20s doing what most people don't — accumulating information and learning others skip. He credits a marketing head at a well-known FMCG company with a piece of advice he initially dismissed: across a 40-year career, roughly 70–80% of everything you'll ever learn happens in the first eight years. After that, you mostly repeat the same lessons at a bigger scale. That makes early learning disproportionately valuable.
It helps, he adds, that your 20s usually come with no family, no kids, no mortgage, and no EMIs — which is exactly why this is the decade to take risks. Concretely, he suggests building future-proof skills. Citing the World Economic Forum's Future of Jobs report, he argues that AI-proofing your career means investing in human skills: storytelling, personal branding, strategic thinking, influence, and top-class communication. He also recommends spotting industries set to grow — electric vehicles, renewable energy, sustainability in India — and getting a foothold through weekend projects or courses. And talk to people in their 30s and 40s about what they got wrong; their hindsight is your shortcut.
Cheat Code 2: Your Peer Group Decides Your Success
The second cheat code comes from psychology. Das invokes the line "show me who your friends are and I'll show you how much you'll succeed," and explains it through mirroring — the tendency to absorb the mindset and emotions of the people around you. You end up performing at roughly the level of your group.
So he urges choosing your circle deliberately, around your long-term ambition. Want to be a content creator? Spend time around good ones and learn their techniques and mindset. Want to build a business? Move among entrepreneurs, and watch your instinctive belief that "starting a company is too hard" quietly dissolve as it starts to look normal. The flip side is a warning: a toxic or perpetually negative group will drag your mindset down, and even a comfortable, familiar friend circle can hurt you if it's keeping you stagnant. The honest question to ask, he says, is whether you're actually growing because of the people around you.
Cheat Code 3: Optimize for Optionality, Not Efficiency
Here Das names the mistake he thinks costs young people the most. Faced with choices — safe job or startup, stay home or move abroad, specialize or generalize — most people instinctively pick the efficient, stable, comfortable option. That reasoning, he argues, is correct for your 40s and wrong for your 20s.
Young and unburdened, you should be building options instead. That means chasing a diversity of experience: working across multiple cities, multiple industries, and multiple skill sets, and leaning toward being a generalist rather than narrowing too early. He's especially emphatic about taking any opportunity to study or work abroad — not for the curriculum, but for the education of living somewhere else, eating different food, and absorbing a different culture. Efficiency, he says, is a concern for later; your 20s are for maximum risk.
Cheat Code 4: Reject Status Games
The fourth cheat code targets a modern trap: spending to look successful. Das points to the now-familiar statistics — iPhones bought on EMI, ₹30–40 lakh cars financed on ₹4–5 lakh salaries, foreign vacations funded by credit-card debt — all in service of appearing to have arrived.
The cost, he argues, comes in two forms. The first is emotional: when you chase status, you've outsourced your happiness to your friends' approval, handing over control of your own life. Until they call you successful, you'll never feel it. The second is financial, and here his case sharpens. Spending your 20s servicing credit-card interest costs you sleep, and in an unstable job market, savings are what let you take risks and stay calm — the panic of financial insecurity, he notes, shows on your face at the office and holds you back. His rule of thumb: of every ₹100 you earn, spend about 10% on yourself and experiences, and keep 90% for daily costs and savings. A rupee saved at 23 or 24, he stresses, compounds into something far larger over the next two decades.
Cheat Code 5: There's No Single Formula
Das's final cheat code is a caution against copying anyone. Every journey is unique, he says, and luck plays an enormous role — he estimates most people who give advice, himself included, are 70–80% lucky. His prime example is survivorship bias. We look at college-dropout founders like Bill Gates, Mark Zuckerberg, and Steve Jobs starting companies in garages, and conclude that's the path to success. But for every Steve Jobs, he points out, a hundred thousand dropouts failed — we simply never see the 99% of stories that didn't work out.
The same applies closer to home: when a senior vice president or director hands you advice, ask whether they got lucky — joining the right company at the right time, landing the right projects. The takeaway isn't cynicism; it's independence. Don't copy someone's roadmap point-to-point, because you likely don't share their timing, resources, or luck. Build your own journey instead.
The Five, In Short
Das closes by recapping: build asymmetric information by doing what others aren't; choose your peer group very carefully, because it determines your success; build options rather than efficiency; build leverage through saved money and a strong network; and remember there's no single formula for success — build your own path. All five, he reminds viewers, are lessons he learned the hard way in his own 20s.
Originally published on Sandeep Das. Watch the full episode: https://www.youtube.com/watch?v=Brtc34lHdVE