--- title: "The Peter Principle" description: "Why top salespeople so often fail as sales managers — the Peter Principle, the five levels of competence, and what it takes to actually lead." author: "Thomas" site: "Clapter" canonical: "https://clapter.com/writing/peter-principle" datePublished: "2026-05-01" dateModified: "2026-05-25" keywords: ["Peter Principle", "leadership", "sales management", "competence levels", "John C. Maxwell"] wordCount: 1080 readingTimeMinutes: 6 language: "en" --- # The Peter Principle > "In a hierarchy, every employee tends to rise to their level of incompetence." > — Laurence J. Peter The Peter Principle is one of those ideas that sounds like a joke until you have seen it happen enough times. People get promoted because they are good at what they do. And they keep getting promoted until they reach a role they are not good at. Then they stay there. It is just how many organisations work. Personality can open doors. Charisma can buy you time. But neither will take you far enough. Leadership is a discipline, with its own laws, its own best practices, and its own body of knowledge built over centuries. It can be studied, practised and improved. Very few people are born with it fully formed. Most develop it, deliberately, over time. The organisations that consistently produce great leaders are not the ones with the most charismatic managers. They are the ones that take leadership seriously as a discipline, invest in developing it deliberately, and never stop. > Sidenote: Many of these organisations also consistently rank among the best places to work. Can that really be a coincidence? See: [Great Place to Work](https://www.greatplacetowork.com). Nowhere is the Peter Principle more visible than in sales. Sales is a craft. Leadership is also a craft. But they are not the same craft. The top performer closes more than anyone else. Consistently. Somehow finds a way when others don't. Driven, competitive, relentless. The kind of person who takes it personally when a deal falls through. So the company does what feels logical. They make that person the sales manager. And then something strange happens. The same qualities that made them exceptional start working against them. The drive to close becomes impatience with the team. The competitive instinct becomes a tendency to take over deals instead of developing the people working them. The personal ownership of results — my numbers, my bonus, my patch — becomes a blindspot for the nine other people who also need to hit their numbers. The best salesperson optimises for their own results. That is not a flaw. It is the job. But the sales manager's job is fundamentally different. Their number is the team's number. Their success is measured entirely in other people's success. The mindset that won them the promotion is the same mindset that will sabotage them in the new role. The sales manager who never makes the mental shift does not just underperform. They actively damage the culture they once thrived in. Top performers are used to being seen. The applause, the recognition, the number one spot on the leaderboard. In the right role, it is rocket fuel. But the sales manager's job is to put other people in the spotlight. To find the moment a struggling rep finally lands a deal and make sure the whole team feels it. To become genuinely, not performatively, more excited about someone else's win than their own. That is the shift. And it is harder than it sounds, because it asks you to rewire something that has been working for years. Good leaders lift others up, not themselves. When things go well, they point at the team. When things go badly, they look in the mirror. The best managers I have seen operate almost invisibly. Their fingerprints are everywhere, but their name is nowhere. The team wins. The leader enables. Poor leaders do it the other way around. Credit travels up. Blame travels down. And everyone in the room knows it, even if nobody says it out loud. The ones who cannot make the shift — and I have seen many — keep chasing the applause. They stay in deals too long. They take credit too easily. They need to be the best in the room, even when the room is their own team. And slowly, quietly, the culture dies. Not with a bang. Just with a gradual loss of trust, energy and belief. But here is where I think most get it wrong. The fact that someone was a top performer does not make them a bad leader. It gives them something no external hire can match. They have been in the chair. They know what a hard week feels like from the inside. They know the difference between an excuse and a real obstacle. They know exactly what good looks like, because they have lived it. There is a model for understanding skill development that I find useful here. 1. **Unconscious incompetence** — You don't know what you don't know. Or worse: you think you do. Nobody wants a surgeon who doesn't know what they don't know. 2. **Conscious incompetence** — You know what you are missing. You cannot do it yet. This is the moment real development becomes possible. You cannot learn what you already think you know. 3. **Conscious competence** — You can do it, but you have to concentrate. Scripts, checklists, repetition. It feels unnatural. It feels slow. This is where most people give up. Push through and the skill starts to become yours. 4. **Unconscious competence** — It becomes automatic. Flow. The craft is in the body, not just the head. Most top performers live here. They have internalised the work so deeply that they cannot always explain why they do what they do. They just do it. The problem: it is very hard to teach. You cannot coach someone with "just feel it like I feel it." 5. **Conscious unconscious competence** — The teacher level. You perform at the highest level and can simultaneously observe yourself doing it. You can name what you are doing, explain why it works, and translate it into something teachable. You have converted your intuition into a curriculum. You can take someone from level one all the way to level four, because you understand every step of the journey from the inside. Success without leadership has a ceiling. If you try to lead with the same tools that made you a top performer, you will hit that lid. Every time. The coach's job is not to score goals. It is to build players who score goals better than the coach ever did. If you are making that transition now, or about to, the work is not to become a different person. It is to redirect what you already have. The drive, the standards, the hunger. Point it at your team, not at your own number. The Peter Principle is a warning. But it is not a sentence. --- ## Recommended reading Three books I recommend on leadership. All John C. Maxwell. This is the order that makes most sense to me. - **[The 21 Indispensable Qualities of a Leader](https://www.amazon.com/dp/0785274405)** — Start here. Understand who you need to become before you study what you need to do. - **[The 21 Irrefutable Laws of Leadership](https://www.amazon.com/dp/1400236517)** — The framework. Law number one alone is worth the price of the book. - **[The 17 Indisputable Laws of Teamwork](https://www.amazon.com/dp/0785288635)** — Read this last, when you are ready to think beyond yourself and build something together.