I wrote a book
Solopreneur: The Art of Working Alone
You left the corporate world for freedom. Nobody warned you about the silence.
Get the bookThis isn't another book telling you to quit your job and hustle until you make it. This is the story of what actually happens when you build products alone, told by someone still in the middle of it.
Marcel Berger spent over a decade working independently. He used to run a company with twenty-one employees and millions in revenue; it no longer exists. After that he went back to working alone.
That is how he started: building apps and SaaS products in three-hour evening blocks after his day job at the time, aiming for full independence within a year.
Solopreneur is the honest account of that journey: the freedom and the loneliness. The automation that replaces teams and the 3 AM debugging sessions nobody shares on LinkedIn. The marketing struggle that humbles every developer. The inner work that makes or breaks you. The infrastructure failure that wiped out 100 % of his paying subscribers in a single week, and what it taught him about trust.
What this book covers
- Why routine creates more freedom than chaos ever will
- The systems, automation, and technical stack that let one person do the work of many
- How to market products when your instinct is to hide behind code
- Managing impostor syndrome, self-doubt, and the fear that never fully sleeps
- Building meaningful connections without the noise of corporate networking
- The art of stillness: why rest is strategy, not weakness
- Using AI as a force multiplier without losing accountability
What this book is not
No three-step formulas. No passive income fantasies. No beach laptops. No survivorship bias. Just a developer building real products, sharing real lessons, ugly parts included.
Written in the middle of the journey, not from the safety of achieved success. You're getting the real-time version, not the polished highlight reel.
For developers, solopreneurs, indie hackers, and anyone who has ever sat in a meeting thinking: “I could build this myself.”