Bestselling Business Book
$$$
The Six-Figure Second Income
How To Start and Grow A Successful Online Business Without Quitting Your Day Job
David Lindahl & Jonathan Rozek
Wiley
Bestselling Business & Entrepreneurship

The Six-Figure Second Income

How To Start and Grow A Successful Online Business Without Quitting Your Day Job

You don't need to quit your job, find a million-dollar idea, or take a leap of faith. You just need a proven system — and the patience to follow it. That's what this book is about.

4x #1 Bestselling Author
8-Figure Online Business Built
30+ Years in Business
Wiley Published by

The Honest Guide to Building Something Real Online

This book was written for people who want more — but aren't willing to bet everything on an untested idea.

Here's the premise: you don't need to quit your job to build a meaningful online income. In fact, some of the most successful online businesses were started by people who kept their day jobs, built slowly, tested their ideas with real money before going all-in, and scaled from there.

David Lindahl and co-author Jonathan Rozek wrote this after building an eight-figure information marketing business from scratch. Not a theory business. A real one — with real customers, real revenue, and real hard-earned lessons about what works online and what just looks good in a blog post.

The Six-Figure Second Income is conversational, practical, and refreshingly straight. It doesn't promise overnight success. It explains what it actually takes to build a sustainable online business — and how to do it while keeping your day job until you're ready to make it your only job (if that's even the goal).

💡 Finding Your Niche

How to identify a profitable market that matches your knowledge — without needing to be the world's top expert.

🛒 Creating Products That Sell

What information products people actually pay for — and how to create them without quitting your job or mortgaging your house.

🌐 Building Your Online Presence

How to set up your site, email list, and digital storefront without getting lost in the tech weeds.

📢 Driving Real Traffic

The marketing strategies that actually bring buyers — not just browsers — to your site.

💌 Building a List That Converts

Why email is still the most powerful tool you have — and how to build an audience that trusts you and buys from you.

📈 Scaling Without Burning Out

How to go from a side income to a real business — the systems, outsourcing, and decisions that make it sustainable.

If Any of This Sounds Like You, Read This Book

The Six-Figure Second Income was written for a lot of different people. Here's who gets the most out of it.

💼
The Day-Jobber
You have a stable income but want to build something on the side — without risking your livelihood to test an idea.
🚀
The Aspiring Entrepreneur
You know you want to run your own business someday. You're looking for a practical first step — not a pep talk.
🎯
The Subject-Matter Expert
You have knowledge other people would pay for, but you don't know how to package or sell it online.
🔄
The Career Transitioner
You're thinking about a career change and want to test the waters before you jump. This book shows you how.
📊
The Real Estate Investor
Already in real estate but want to diversify into information products or online income? This is the bridge.

David Lindahl

Most people know David Lindahl as a real estate investor. And he is — 30+ years, 10,000+ units, 27 markets across the country. But there's another side of David's story that most people don't know: he also built an eight-figure information marketing business.

Starting with real estate education, David figured out how to take what he knew and turn it into courses, books, seminars, and programs that helped thousands of people. That process — taking expertise and building a real business around it online — is exactly what this book teaches.

Co-authored with Jonathan Rozek, The Six-Figure Second Income is the distilled playbook from people who've actually done it. Not consultants. Not coaches who make money teaching you to be a coach. Operators who built real revenue.

More from David

Start Building Your Second Income

Available in print, digital, and audio. Pick up a copy wherever books are sold.

📚
Paperback
The original print edition. Great for annotating and building your business library.
Buy on Amazon
📱
Kindle Edition
Download instantly and read on any device. Search and highlight as you build.
Get Kindle Version
🎧
Audiobook
Listen while you commute, exercise, or work. Check Audible for availability.
Check Audible

Keep Going

The book opens the door. Here's the rest of David's world — investing, community, and more.