Lenny's Podcast: Product | Career | Growth

How I built a 1M+ subscriber newsletter and top 10 tech podcast | Lenny Rachitsky

March 12, 2026

AI Summary

5 min read

Lenny Rachitsky explains to his wife Michelle Rial how he built a newsletter with 1.2 million subscribers and a top-10 tech podcast, starting from side writing while leaving Airbnb in 2019.

Path to Launching

Rachitsky left Airbnb after seven years as a product manager with plans to start a company or join a startup, but side Medium posts on lessons learned gained traction, including one featured company-wide. A friend's advice—to pursue the rare overlap of enjoyment, skill, and audience value—led him to experiment with weekly Substack posts for nine months. Applying the Lindy effect (if it's lasted this long, it likely will longer), he added a paywall amid COVID uncertainty over Airbnb stock, generating meaningful revenue quickly.

Content Principles and Execution

Most posts are now guest contributions from practitioners sharing career learnings, prioritizing real experience over abstract pontification. Rachitsky iterates drafts 50+ times for quality, often setting them aside before refining, and maintains weekly output for sustainability. He tests his own reaction first—does it feel interesting?—before seeking feedback, mirroring Michelle's chart-making process of simplifying until it evokes a laugh or emotion.

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What you'll learn

1 **[00:03] Psychedelic insight kickstarts newsletter confidence**
2 **[04:16] Career pivot: From Airbnb PM to solo newsletter**
3 **[07:25] Key moments scaling to 1.2M subscribers**
4 **[10:26] Thrill of work vs. relentless weekly treadmill**
5 **[12:43] Stress management: Genetics, optimism, practices**
6 **[31:57] Early projects hint at content curation roots**
7 **[37:39] Solo operator challenges: Loneliness, no full-time hires**

+ Full timestamped outline available in the app

Show Notes

People have been asking me to sit on the other side of the mic for a long time. With my wife’s debut children’s book, Charts for Babies, coming out next month, we figured: why not do it together? What followed was one of the most honest conversations I’ve had on this podcast. Michelle asked things no one else would think to ask—and many things I’ve never shared publicly. You’ll hear about the specific moments that pushed me to start the newsletter, how I think about quality and iteration, what most stresses me out, and the scariest moment of my life. This was so fun, and so special, and I hope you like it.

We discuss:

1. The collection of moments that led me to what I do now

2. When I added a paywall, and how I knew it was working

3. The hidden treadmill behind shipping a newsletter post and podcast episode every week

4. The most stressful moments I’ve had in business and in life

5. How I think about stress, consistency, and keeping the business small

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Pre-order Charts for Babies: https://www.amazon.com/Charts-Babies-Picture-Book/dp/1419785184

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Brought to you by:

WorkOS—Modern identity platform for B2B SaaS, free up to 1 million MAUs: https://workos.com/lenny

Metaview—The AI platform for recruiting: https://metaview.ai/lenny