Doctor Market Fit

Ultimate Guide to Interviews #5: Identifying the right JTBD for your startup

How to navigate the chaotic data of interviews

Mar 4 • Jeroen Coelen

11

February 2026

Most startup tips are actually bullshit

Here’s why, and what do do instead

Feb 26 • Jeroen Coelen

14

1

The 10-minute masterclass on validating your startup idea for under $1,000

A real-world breakdown of how to dodge expensive roadblocks before building your product.

Feb 22 • Jeroen Coelen

6

1

9:53

AGI has been 20 years away for the last 50 years

People flock to the next value-unlock, from PMFit to the metaverse

Feb 15 • Jeroen Coelen

11

6

2

Stop trying to be a visionary: you can't create demand

Demand is like gravity, you need to unlock it

Feb 12 • Jeroen Coelen

10

1

Measure Product-Market Fit with the PMFit Scale

Version 4 just dropped, including Go To Market Signals

Feb 4 • Jeroen Coelen

11

January 2026

Make your MVP truly minimal with this framework

How to make your MVP truly minimal

Jan 28 • Jeroen Coelen

13

What to focus on next? Identify key pitfalls of your startup with this toolkit

Including 30+ business model examples and 30+ experiment for startups

Jan 19 • Jeroen Coelen

8

4

Startup failure: It's never about timing

Stop blaming the market for your mistakes

Jan 10 • Jeroen Coelen

18

2

4

20:13

I worked with 100+ founders last year. Here’s what the top performers did differently.

Reflections on 2025 to empower your 2026

Jan 2 • Jeroen Coelen

20

4

2

December 2025

Three tips on selecting your target market

With examples from last week's mentoring

Dec 18, 2025 • Jeroen Coelen

11

2

1

Why you can't activate a passive market

Introducing Schrödingers problem

Dec 12, 2025 • Jeroen Coelen

19

1