The hardest decision nobody teaches you I have watched people lose months, sometimes years, on initiatives that should have been killed in week three. Not because they were stupid. Because nobody ever taught them how to recognise when something is failing versus when it just needs more time. This is one of the hardest calls in business. And most people get it wrong in the same direction: they hold on too long. The sunk cost fallacy is real, but knowing it exists does not make it easier to walk away from something you have poured yourself into. I have sat across from people in London who have spent £40,000 on a product launch that is clearly not working, and they still want to give it another quarter. The logic is always the same: we have come this far. That logic will bury you. What failing actually looks like Here is the problem. Failing does not announce itself. It disguises itself as a rough patch, a temporary dip, market conditions, bad timing. All of which might be true. Or might be excuses. I look for three signals when I am helping someone figure out whether to persist or pull back. First: the gap between effort and result is widening, not narrowing. If you are working harder and getting less, that is a pattern. Early on, results are lumpy. But after six months, you should see some relationship between input and output. If you are doubling your effort and seeing flat or declining returns, something structural is broken. Second: the original hypothesis has been disproven but you are still acting as if it might be true. Every initiative starts with an assumption. Maybe it is that customers will pay £50 for this service, or that you can acquire leads through LinkedIn, or that this partnership will open doors. When the data says no, and you keep trying anyway, you are not being persistent. You are being stubborn. Third: you cannot articulate what would need to change for this to work. If your answer is vague, that is a red flag. When I ask someone what success would look like, and they say something like we just need more traction, I know they have lost the plot. Traction is not a plan. It is a wish. The 30 percent rule Here is something I learned working with a client last year. He had a side project that was eating 30 percent of his time and generating maybe 5 percent of his revenue. When I asked why he kept it, he said it might take off eventually. Might is expensive. I asked him to calculate what that 30 percent of his time was actually worth if he spent it on his core business instead. The number was somewhere around £1,800 a month in opportunity cost. Over a year, that is £21,600 he was essentially betting on might. He killed the project that week. The 30 percent rule is simple: if something is taking more than 30 percent of your resources and returning less than 10 percent of your results, you have a problem. Not a rough patch. A structural misallocation. Why pulling back feels like failure Because it is. Partially. I am not going to tell you that quitting is secretly winning. Sometimes it is just quitting. The initiative did not work. You read the market wrong, or the execution was off, or the timing was bad. That is real. But here is what I tell people who are struggling with this: the failure already happened. The question is whether you recognise it now or in six months when it has cost you twice as much. Look at what is happening with Ryanair pulling out of Berlin. They looked at the numbers after Germany raised its aviation tax, and they made a call. Some people are calling it profit oriented as if that is an insult. I call it clarity. They saw a structural change, recalculated the economics, and moved resources elsewhere. That is not defeat. That is discipline. You do not have to be a massive airline to think this way. The principle is the same at any scale. How to make the call When I work with people on this, we run a simple exercise. I call it the clean slate test. Imagine you are starting fresh tomorrow. No history, no sunk costs, no emotional attachment. Would you start this initiative today, knowing everything you now know? If the answer is no, you have your answer. If the answer is maybe, dig deeper. What would need to be true for you to say yes? Write it down. Be specific. Then ask yourself: is there any realistic path to those conditions? This is not about being pessimistic. It is about being honest. I use a version of the 5 Whys tool at ALIRA. to help people get past their surface level justifications and find out what they actually believe. The cost of not deciding The worst outcome is not pulling back too early or too late. It is not deciding at all. I have seen people run failing initiatives on autopilot for years because making the call felt too hard. They just kept going, adding a bit of budget here, a bit of time there, never enough to succeed, never willing to stop. That is the real trap. Not sunk costs. Drift. If you are reading this and something came to mind, that is probably the thing. You already know. You are just looking for permission. You do not need permission. You need a date on the calendar and a decision. What to do this week Pick the initiative you have been uncertain about. Write down the original hypothesis it was based on. Has it been validated or disproven? Calculate the real cost: time, money, and opportunity cost. What could those resources be doing instead? Put a number on it. Set a decision date within the next 14 days. Not to decide right now, but to commit to deciding. Block an hour, review the evidence, and make the call. No more drift.