We've all been there: the code looks fine, the tests pass, but somehow bugs still make it to production. So what can you do to write more correct code and significantly reduce the number of bugs? One technique I use regularly to prevent exactly these situations is writing negative if statements — also known as the Early Return pattern. What Does That Actually Mean? Instead of first checking the case where the action should happen, you check the invalid cases first and eliminate them as early as possible. This approach makes your code significantly more readable and focused. For example, instead of writing this: if (user.isLoggedIn && user.hasPermission) performSensitiveAction(); It's better to use a negative check: if (!user.isLoggedIn || !user.hasPermission) return performSensitiveAction(); The happy path — the thing you actually want to do — sits at the bottom, unindented and obvious. Each guard at the top handles one specific failure case. Why Is This Better? Readability: The code becomes clearer and more focused because edge cases are checked and dismissed upfront. You don't have to mentally track nested conditions to understand what the function actually does. Safety: It's easier to spot bugs and prevent them from escaping, because critical conditions are checked explicitly and visibly at the top. Maintainability: It's much easier to add new conditions or handle additional cases when your checks are clearly laid out at the start of the function. Log the Failure While You're There When you use negative if statements, you get a natural place to document why an action didn't succeed. This is the perfect spot to add detailed logs that help you debug the system both in real time and after the fact. Here's a more complete example: if (!user.isLoggedIn) logger.warn(`Access attempt without login: $request.ip`, userId: user.id, ); return res.status(401).send("Please login first"); if (!user.hasPermission) logger.warn(`Permission denied for user: $user.id`, action: "performSensitiveAction", requiredPermission: "admin", ); return res.status(403).send("Insufficient permissions"); performSensitiveAction(); Good logging at these guard points enables: Security tracking — detecting unauthorized access attempts Bug understanding — logs show exactly what happened when something went wrong Better UX — you can identify where users get stuck Faster response times — support teams can resolve issues faster with full context Pair It with Proper Error Handling Logging is part of the picture, but error handling matters too: Use try/catch — especially for async operations or calls to external resources Return clear error messages — so users know what happened and what to do Monitor automatically — tools like Sentry or LogRocket track errors in real time so nothing slips by silently Combining negative if statements with solid error handling makes your code not just more readable, but more resilient and reliable. The Counter-Argument Sometimes, writing too many early returns makes a long or complex function harder to follow. When a function spans many lines and has a dozen early exits, it can become difficult to track the overall flow. So Which Is Better? Like most things in code: balance matters. For short, focused functions, negative if statements are almost always a win. For long, complex functions, it's sometimes better to keep a positive if structure — and invest instead in breaking the function into smaller pieces. Since I started using this pattern consistently, the number of bugs reaching production dropped significantly, and code reviews became much smoother. For a deeper dive into this idea, I highly recommend this video by CodeAesthetic: Do you use early returns consistently? Are there cases where you intentionally avoid them? I'd love to hear your take in the comments.