Doctor Market Fit

Jeroen Coelen
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Actionable insights for founders poured in stories, straight from my experience mentoring 300+ startups and my PhD research on early-stage startups. www.doctormarket.fit

  1. JAN 10

    Startup failure: It's never about timing

    Founders of say they failed because of timing. I call b******t. In this post, I investigate when timing actually is a good explanation for failure. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    20 min

  2. 07/23/2025

    What is your founder reflex?

    When founders face a problem, they can default to a reflex. These reflexes aren't conscious or deliberate: they’re shaped by background, training, and personal comfort zones. I see three common ones in the wild: the engineering reflex, the design reflex, and the MBA reflex. Startups are a unique type of problem, where there’s not one reflex that always applies. Each reflex brings something powerful to the table. But each also has a predictable blind spot. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    12 min

  3. 07/02/2025

    The uniqueness bias

    * Uniqueness bias: “We’re different” is usually a delusion. * Overlooking look-alikes can cost many months and much cash. * New research reveals exactly how this bias blinds people. * Learn how this can supercharge your startup. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    7 min

  4. 10/02/2024

    Do 9 out of 10 startups fail?

    9 out of 10 fail. Or do they? This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    27 min

  5. 05/01/2024

    Only 11% of startups use risky assumptions. Here's why.

    Check out the full article on iwantproductmarketfit.com This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    10 min

  6. 03/13/2024

    8 myths you tell yourself to not talk to customers yet (with audio version)

    https://iwantproductmarketfit.substack.com/p/8-myths-you-tell-yourself-to-not This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    6 min

  7. 09/06/2023

    How we learn to recognise problems (long-read)

    That's a long read https://iwantproductmarketfit.substack.com/p/how-we-learn-to-recognise-problems This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    18 min

  8. 06/07/2023

    How Google struggled to monetize its search monopoly

    📎 Article: https://iwantproductmarketfit.substack.com/p/how-google-struggled-to-monetize 💬 Quote of the day “Slow and steady wins the race. And if it doesn’t, you might want to reconsider participating in that race” 🔗 My three favourite links * The best tip for building arguments from the makers of South Park * Don’t stress over your competition, focus on your customers * Twenty book tips for founders This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.doctormarket.fit/subscribe

    10 min
See All (27)

About

Actionable insights for founders poured in stories, straight from my experience mentoring 300+ startups and my PhD research on early-stage startups. www.doctormarket.fit

Information

  • Creator
    Jeroen Coelen
  • Years Active
    2022 - 2026
  • Episodes
    27
  • Rating
    Clean
  • Copyright
    © Jeroen Coelen
  • Show Website
    Doctor Market Fit