How CJ Gustafson Built a +60k Subscriber Newsletter as a Side Hustle

What does it take to grow a thriving newsletter with 60,000+ engaged readers all while working full-time as a CFO? 

CJ Gustafson, from Mostly Metrics, is on this week’s episode of the Niche Pursuits Podcast to share how he built a highly profitable brand on the side.

In this episode, he delivers a masterclass in newsletter growth, monetization, and the power of niche content.

This is a conversation packed with actionable insights and behind-the-scenes stories, and CJ reveals how he turned a once-slow-growing side project into a high-performing B2B media brand serving over 60,000 subscribers—including CFOs, founders, and business nerds who geek out over financial models and company benchmarks.

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