The 80% Leader: Why Running at Full Speed Made Me Worse at My Job

Have you ever thought someone was paying you a compliment, only to realize later they were describing a problem?

For most of my career, people told me some version of the same thing: "I can't believe everything you get done. Your workload looks insane." I heard it as praise. I filed it away as evidence that I was doing leadership right. But, unfortunately, it took me an embarrassingly long time to understand that "wow, you accomplish a lot" can be an unintentional description of an unhealthy pattern, not an achievement to be proud of.

The turning point came in a single month, when three separate people, two of them with significant senior leadership experience of their own, told me the same thing without coordinating with each other. Each of them said, in their own words, that leading at full speed as a permanent rhythm was dangerous, and that I needed to slow down. Not eventually. Soon.

My first reaction was disbelief. Slow down? Who deliberately aims to operate at less than 100 percent? That sounded to me like a recipe for getting less done, and getting less done sounded like a failure of leadership. But when three thoughtful people independently told me the same hard thing in the space of a few weeks, I couldn’t ignore it.

The Math of the Next Emergency

Here is the logic that finally reached me, once I opened my mind.

If a senior leader runs at 100 percent of their capacity as their normal operating state, they have nothing left for the next organizational emergency. And there is always a next emergency. It is not a question of whether, only when. A key staff member resigns without warning. A funding source disappears. A crisis lands on a Tuesday that reorders the entire quarter. These are not exceptions to leadership. They are the actual substance of it.

The problem with running at full capacity is not that it is difficult, but that it is damaging. A senior leader with no margin cannot absorb a shock without dropping something else, and the something else is usually the very work that only they can do: setting direction, making the judgment calls no one else is positioned to make, holding steady so the people around them can stay steady too. When the senior leader has no reserve, the whole organization inherits the shortage. The mission suffers, and the people suffer with it.

The hard part is that you cannot schedule the emergency. It might arrive tomorrow, or it might hold off for four months. That uncertainty is exactly why reserve capacity has to be built in advance and held on purpose. You cannot create margin in the middle of the crisis that requires it. By then it is too late. The capacity has to already be there, waiting, unused, which is precisely what makes it feel wasteful to a leader wired the way I am wired.

Why 80 Percent, and What That Actually Means

When one of those leaders put a number on it, the target that came back was 80 percent. Aim to operate, as a sustainable norm, at about four-fifths of your capacity, and hold the remaining fifth in reserve.

I want to be candid about my first response, because I suspect many readers will have the same one. I thought: that is ridiculous. What kind of leader plans to work at 80 percent of their ability? How does anything get finished? What kind of example does that set for a team? It took me a while to recognize that those objections were not wisdom. They were the sound of my own performance-based, workaholic tendencies defending themselves.

I am not going to pretend the 80 percent figure is a precise, research-validated constant. I have never treated it that way. What it is, is a working target, a discipline that reframes reserve capacity as a deliberate feature of healthy leadership rather than evidence of laziness. The exact percentage matters less than the shift in mindset: from asking "how much can I take on?" to asking "how much should I hold back so I can lead well when it counts?"

It also helped me to notice that "capacity" is not one thing. There is calendar capacity, the hours actually available. There is attentional capacity, the ability to think clearly rather than just react. And there is emotional capacity, the reserve that lets you absorb other people's anxiety without adding your own. A leader can have an open afternoon on the calendar and still be running at 100 percent emotionally, with nothing left to give. Protecting 80 percent means paying attention to all three, not just the one that shows up in a scheduling tool.

What Changed When I Actually Tried It

Over the past few years I have restructured my schedule and my project load so that I am no longer sprinting at full speed every single day. I aim for 80 percent. I want to be honest: it has not been easy, and I have not always hit the target. Old habits, especially the ones that used to earn praise, do not surrender quietly.

But during the seasons when I have managed to hold closer to 80 percent for a sustained stretch, I have been, by any objective measure, a better leader. I have led an institution through a multi-year process of significant restructuring and reculturing, the kind of work that generates a steady supply of the unexpected. The difference between navigating those surprises well and merely surviving them came down, again and again, to whether I had reserve capacity in the tank when they arrived. When I did, I could respond thoughtfully. When I was already redlined, I could only react.

That is the practical case for margin, and it is not a soft one. Reserve capacity is not a wellness perk or a reward for good behavior. It is a core competency of senior leadership, because the moments that most define an organization are the ones no one saw coming, and those are precisely the moments a maxed-out leader is least equipped to meet.

Looking Ahead

I am still working on this, although I have become much better. I continue to adjust my calendar and my commitments so that I will have what I need to lead well through whatever storm arrives next. I do not always get it right. But I no longer mistake a full plate for good leadership, and I no longer hear "you get so much done" as the compliment I once thought it was.

So I will hand the question to you, the way it was handed to me.

What percentage of your capacity are you leading at right now, honestly? If the next crisis landed this week, would you have the reserve to lead through it well, or would it cost you the work only you can do? What do you need to do, in your calendar and your commitments, to build the margin your people are counting on you to have?

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Mark Wessner is a seminary president, executive coach, and leadership author with 25+ years of senior leadership experience. Founder of Leading Well, he works with leaders in ministry, nonprofit, and organizational settings, helping them lead with clarity, integrity, and lasting impact. He holds a PhD from the University of Pretoria and is a Birkman Certified Professional. Mark writes and speaks on leadership development, organizational health, and spiritual formation.