
You did everything right, or at least you thought you did, and the deal still fell apart anyway. This one is coming from the archives, and the principles hold up just as well today as they did when we first recorded it.
George Brontén, founder and CEO of Membrain and author of Stop Killing Deals, broke down the three deadly assumptions that quietly sink B2B sales deals, and how to catch them before they cost you the close. The Three Assumptions That Quietly Kill Deals Deals rarely fall apart because of one dramatic mistake, they fall apart because of small, invisible assumptions that go unchecked from the first call all the way to the close.
The first flawed assumption is believing salespeople are simply born with the right traits, which leads to hiring extroverted, competitive people regardless of whether those traits actually fit the sales environment being sold into. A transactional sale and a complex, multi-year B2B sale call for completely different skill sets, so hiring for one generic "salesy" personality type instead of the specific environment is a mistake that shows up later in lost deals.
Why Buyers Don't Decide Rationally The second assumption is believing buyers will act rationally once they're shown a logical case for the product, when in reality people buy with emotion first and rationalize the decision with logic afterward. Proving a product is the better choice on paper doesn't guarantee a rational decision back, because the buyer's hesitation is usually tied to internal risk, politics, or past experience that logic alone can't resolve.
Understanding that gap between what buyers say and how they actually decide changes how a rep should run a sales conversation, shifting it from a pitch toward a genuine discussion about what's really driving the decision. The Myth of the Naturally Disciplined Seller The third assumption is expecting salespeople to be naturally disciplined enough to do whatever it takes to hit a number, when discipline is actually a set of habits that has to be built deliberately, not a trait people are simply born with.
A lack of discipline shows up in small, specific gaps, like failing to identify every stakeholder in a deal or skipping a promised follow-up, and those small gaps are what let a deal quietly stall. The fix isn't willpower, it's building daily habits and structure into the sales process itself, so discipline becomes the default instead of something a rep has to summon on a hard day.
The Number One Deal Killer: Not Knowing How the Decision Gets Made The single biggest issue killing B2B deals is not understanding how the buying decision will actually be made, or who besides the friendly first contact needs to be involved before anything moves forward. A rep can have a great conversation with an enthusiastic champion and still lose the deal entirely, because that champion was never the one with the authority or budget to make the final call.
The fix is asking directly, early in the first call, how this kind of decision typically gets made and who else needs to weigh in, instead of assuming the friendly voice on the phone speaks for the whole organization. Why Discipline Determines Whether Deals Survive A lack of discipline often shows up as avoidance, like a rep who knows there are more stakeholders to loop in but skips that step because the conversation feels uncomfortable.
One real example was a sales team that avoided engaging technical stakeholders because those conversations felt intimidating, so those technical buyers later torpedoed the deal out of fear the product would automate away their jobs. Once that sales team was coached to have those uncomfortable technical conversations directly, framing the product as freeing people up for better work instead of threatening their jobs, their win rates tripled. " If you can always identify all the right stakeholders in every deal, and if you have a sales team and you just focus on that for one year, you're going to improve your results massively. " — George Brontén Leadership Advice, Books, and Quotes George Brontén is the author of Stop Killing Deals: How to Avoid Deadly Assumptions and Achieve Sales Excellence , which breaks down the three assumptions covered in this episode in more depth, along with practical ways to diagnose which one is hurting your own pipeline.
Resources Connect with Brontén on LinkedIn . Learn more about Membrain , the sales enablement CRM built to guide, coach, and support B2B sales teams through the selling process.
Grab a copy of Stop Killing Deals . Sponsorship Offers This episode is brought to you in part by Hubspot.
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This episode is brought to you in part by the TSE Sales Foundation. Improve your connection on LinkedIn and land three or five appointments with our LinkedIn prospecting course.
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