
Dr. D’s 99% Rule
One of the great joys of my life has been mentoring entrepreneurs.
Over the years, scores of aspiring founders have found their way to my office. Some were university students. Others were engineers with cool technologies. Some were physicians, scientists, or retirees finally ready to pursue a dream they had carried for years. Their backgrounds were different, but they all had one thing in common. They wanted to build a venture.
On first meeting, we usually spend a lot of time getting acquainted and talking about their vision. We discuss the opportunity they’re pursuing, the customers they hope to serve, and the business they’re trying to build. Before they leave, I always give them at least one practical task.
I don’t ask them to write a business plan or prepare a PowerPoint presentation.
Instead, I ask them to go out into the world and learn something. Talk to customers. Build a prototype. Get your MVP in front of someone. Try to make a sale. If you can’t make a sale, then at least earn an honest rejection.
After we’ve agreed on the task, I walk over to my whiteboard, and write one number:
99
I turn back and say, “Ninety-nine percent of the people who sit where you’re sitting never come back.”
They almost always smile and say: “Oh, I’ll be back. I’ll definitely do it. I’ll see you next week.”
Most never return.
That’s why I call it Dr. D’s 99% Rule.
The lesson isn’t that 99% of entrepreneurs fail. The lesson is that 99% never get started. They spend too much time and energy writing business plans, refining ideas, tweaking presentations, and pitching at pitch events, when what they really need is practical action.
So here’s my challenge:
Stop planning your next move and make your next move. Call a customer. Schedule the appointment. Demonstrate the prototype. Ask for the order. Learn something you didn't know yesterday. Then come back and let's talk about what you discovered.
Then ask yourself:
Am I going to be one of the 99%, or one of the 1%?
KPI INSIGHT: COMMERCIAL MOMENTUM
Many founders think commercial momentum begins with revenue. It doesn't.
Commercial momentum begins the moment the market starts responding to your venture. Every customer interview, product demonstration, pilot project, referral, Letter of Intent, beta user, pre-order, or strategic introduction is evidence that you're moving closer to commercial success.
Your job as a founder isn't simply to generate activity. It's to generate evidence.
This week, ask yourself one question:
What evidence do we have today that we didn't have last week?
Then capture it. Keep a record of customer conversations, pilot agreements, product demonstrations, referrals, testimonials, and every meaningful market interaction. Over time, these signals become a compelling story of commercial progress for your team, your investors, and, most importantly, for yourself.
Commercial momentum isn't measured only by dollars. It's measured by the growing confidence that customers are telling you, "You're building something we want."
LISTEN: WHY SHOULD I INVEST?
Every week I sit down with a founder and ask the only question that matters: why should anyone put money into this? Listen to the latest episodes here.
If you got a story worth telling, I'm always looking for founders to interview. Reach out here.
