Jeroen Coelen

I Want Product-Market Fit Podcast

Business EN ↓ 32 episodes

Actionable insights for founders poured in stories, straight from my experience mentoring 150+ startups and my PhD research on early-stage startups. iwantproductmarketfit.substack.com

Author

Jeroen Coelen

Category

Business

Latest episode

Jul 8, 2026

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Episodes

The curse of the validation mindset 08.07.2026

Thanks for listening! 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

How I went from zero outbound to 28% reply rate on LinkedIn 10.06.2026

Hello there you podcaster! 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

The 17th century bubble that foreshadows AI's fate? 27.05.2026

Full article on doctormarket.fit Correction on voice-over: of course there are more companies that survived, like Amazon, yet eBay was a relatively new business model that survived. 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

Why referral marketing often is a bad idea 07.05.2026

Full post on substack 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

We haven't learned nothing 22.04.2026

Full article: https://www.doctormarket.fit/p/we-havent-learned-nothing 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

Startup failure: It's never about timing 10.01.2026

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

What is your founder reflex? 23.07.2025

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 powerfu...

The uniqueness bias 02.07.2025

* 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

Do 9 out of 10 startups fail? 02.10.2024

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

Only 11% of startups use risky assumptions. Here's why. 01.05.2024

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

8 myths you tell yourself to not talk to customers yet (with audio version) 13.03.2024

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

How we learn to recognise problems (long-read) 06.09.2023

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

How Google struggled to monetize its search monopoly 07.06.2023

📎 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 f...

My first scientific publication is out, this is what it said 17.05.2023

Full article at https://iwantproductmarketfit.substack.com/p/my-first-scientific-publication-is 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

From beachhead to product-market fit: lessons from the steam engine 05.04.2023

Full article at: https://iwantproductmarketfit.substack.com/p/from-beachhead-to-product-market-fit 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

How to validate your beachhead market with experiments 14.03.2023

Article iwantproductmarketfit.substack.com/p/how-to-validate-your-beachhead-market 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

Five expansion strategies from your beachhead market 23.02.2023

https://iwantproductmarketfit.substack.com/p/beachhead-expansion-strategies 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

What makes a great beachhead market? 12.02.2023

Full article at this link https://iwantproductmarketfit.substack.com/p/what-makes-a-good-beachhead-market 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

19 questions to find your next job in tech 11.01.2023

https://iwantproductmarketfit.substack.com/p/19questionsintech 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

Growing this newsletter: what works and doesn’t work 27.12.2022

All links can be found at https://iwantproductmarketfit.substack.com/p/2022wrapped 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

What to measure pre-product and pre-revenue? 14.12.2022

Full article with graph: https://iwantproductmarketfit.substack.com/p/desirability-scale-v2 Thanks for listening! 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

The difference between problems and jobs to be done 28.11.2022

Thanks for listening! Full article, voting and chat link at: https://iwantproductmarketfit.substack.com/p/problemsvsjobs 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

Can you pitch your startup in 10 seconds? 02.11.2022

Subscribe & Vote at: https://iwantproductmarketfit.substack.com/p/10secondpitch 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

‘Any colour as long as it’s black’: the untold story 19.10.2022

Check out the full article and voting links at https://iwantproductmarketfit.substack.com/p/black-fords-only 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

Customer-problem fit: not all problems come equal 28.09.2022

Full article and visual framework: https://iwantproductmarketfit.substack.com/p/customerproblemfit 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

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