Sales and negotiation are not the same thing. They require different mindsets, different behaviours and different measures of success. Conflating them is one of the most expensive mistakes in commercial life.
Selling is the process of creating desire. You are helping someone understand why they want what you have. The goal is enthusiasm, alignment, forward momentum.
Negotiation begins where selling ends. By the time you are negotiating, the other side already wants what you have — or at least wants to explore whether a deal is possible. The question is no longer whether they want it. The question is on what terms.
The problem is that most commercial professionals have been trained to sell. They are good at building rapport, identifying needs, presenting solutions. And when they enter a negotiation, they keep doing exactly that — selling — when what the situation requires is something fundamentally different.
In a negotiation, enthusiasm is a liability. Urgency is a concession. Filling silence with features and benefits is a signal that you need the deal more than they do.
Knowing when to stop selling and start negotiating is one of the Five Fundamentals. It is also one of the hardest transitions to make, because it requires you to become temporarily less likeable — and most people find that deeply uncomfortable.