Most founders calculate runway using a simple formula: Cash on hand ÷ Average monthly burn rate. The problem is that this formula can mislead you in three different ways—and all of them point in the same direction: making you believe you have more time than you actually do.

"You've found Product-Market Fit." It's one of the most exciting things a founder can hear—and one of the easiest things to misjudge. Many startups see a surge in user sign-ups, rapid revenue growth, or increasing investor interest and assume they've reached Product-Market Fit (PMF). They start hiring, raising capital, and scaling their marketing efforts. But here's the real question: Is your growth driven by genuine customer demand—or simply by short-term momentum?

In the early days of a startup, a founder’s versatility is the single key to survival. At that stage, you are the strongest product manager, the most capable salesperson, and the one replying to customer service emails at midnight. This "hero-style" leadership pushes the company through the barren 0-to-1 phase and successfully validates Product-Market Fit (PMF). However, once the company enters the 1-to-10 scaling phase, the very strengths you once took pride in can transform