After a mediocre show, the temptation is almost overwhelming.
You drive home with a mental list. The opening was too slow. That one effect ran long. Your volunteer invitation felt awkward. You talked over two laughs. The energy dipped in the middle. By the time you get home, you have six things you’re planning to change before the next show.
So you change all six.
The next show is better — noticeably better. You feel it. The audience feels it. You leave feeling like a more competent performer.
And then you spend the next three months unable to figure out which of the six changes made the difference, trying to undo some of them when things wobble again, layering new changes on top of the original six, and slowly building a show that’s a palimpsest of half-remembered adjustments none of which you can separately evaluate.
I did this for a long time. I still feel the pull of it after every difficult performance.
The Experiment Problem
When I was working in strategy consulting, I spent a fair amount of time helping companies think through what they were actually measuring and why. The basic principle of any valid experiment — change one variable, hold everything else constant — sounds obvious when you’re talking about it abstractly. It sounds less obvious when you’re emotionally invested in performing better as soon as possible.
But the principle applies just as much to developing a show as it does to testing a hypothesis about market segmentation. If you change six things simultaneously and the show improves, you’ve learned almost nothing useful. You’ve confirmed that at least one of those six changes was positive — but so were perhaps zero of them, if the improvement came from a different room layout or a more receptive audience or the fact that you were less nervous. Or five of the six were actually negative, and the one genuinely positive change dragged performance upward despite the drag of the others.
This is not a theoretical problem. It’s the specific reason that many performers — and I was one of them — plateau. They make many simultaneous changes after difficult shows, experience some improvement, and then can’t make consistent forward progress because they have no valid data about what’s actually working.
The Night I Learned This
About eighteen months into performing with any regularity, I had a show in Linz that went sideways in a way I’d describe as slow-motion. Nothing catastrophically wrong — no effects broke, no volunteer became a problem. But the energy never climbed to where it needed to be. The audience stayed polite rather than engaged. There’s a quality difference between applause that says “well done” and applause that says “that was remarkable,” and that night I got the former throughout.
In my hotel room afterward I wrote down everything I thought had gone wrong. I counted eight items on the list. My plan was to address all of them before the next performance.
Then I thought about something I’d read that had stayed with me — the idea that deliberate practice, properly understood, is about isolating variables, not about throwing everything at the wall and seeing what improves. I realized I was about to invalidate every lesson I might learn from that Linz show by addressing all its problems simultaneously.
So I forced myself to pick one.
It wasn’t easy. Each of the eight items felt urgent. But I picked the one I thought had the most downstream effect — the place in the show where energy first started to drop — and I committed to changing only that, and watching carefully in the next performance to see if it made a difference.
The next show was in Vienna, about three weeks later. The specific change I’d made worked. I could feel it at the moment the energy usually flagged — it held up instead. The show ended stronger than it had in months.
And I had learned something I could actually use.
Compound Interest Is Real
The financial concept of compound interest maps almost perfectly onto incremental skill development, and it’s worth thinking through the math.
If you improve your show by one percent every two weeks — reliably, measurably, because you’re changing one thing at a time and you can actually see what’s working — over a year you’ve compounded that improvement twenty-six times. One percent compounded twenty-six times is not twenty-six percent. It’s approximately twenty-nine percent, because each improvement builds on the previous one. And because you actually know what’s working, you can accelerate in the areas that matter and stop wasting time on the ones that don’t.
If instead you make six simultaneous changes four times a year, you might — in the optimistic version — actually improve all six things each time. But you’ll also sometimes change things that were already working, and you’ll have no mechanism to tell the difference. Your improvement will be erratic, hard to sustain, and impossible to direct with any precision.
Restraint is not the enemy of improvement. Restraint is what makes improvement legible.
The One-Change Discipline in Practice
My current practice: after every show, I write down everything I noticed. Everything. Fragile moments, moments that worked better than expected, things I want to develop, things I want to cut. This list can be as long as it needs to be.
Then I look at the list and ask: if I could fix one thing before the next show, what would have the most downstream effect on the audience’s experience? Not what annoyed me most, not what felt most technically solvable, but what has the broadest ripple effect.
I pick that one thing. I commit to it before the next show. After that show, I evaluate whether the change worked, then pick the next one.
Sometimes the change takes two or three shows before I can properly evaluate it, because shows vary enough that one data point isn’t conclusive. That’s fine. I give it time. I don’t pile on additional changes while I’m waiting to see the result.
What to Do With the Rest of the List
The other seven items on the list — or the other five, or twelve — don’t disappear. They go into a running document I keep for each show. They sit there, waiting. Sometimes I get back to them. Sometimes, by the time I would address item four, I realize items two and three have already solved it indirectly because the show’s structure is now cleaner. Sometimes an item I thought was important turns out not to matter once the upstream problem is fixed.
The list is never urgent. Only the one next thing is urgent.
This sounds frustratingly slow until you realize that the performers you most admire — the ones with shows that feel effortlessly clean and precisely calibrated — got there through exactly this kind of patient, disciplined iteration. Not through heroic overhaul but through accumulated small decisions, each one made with enough information to be valid.
The Hardest Part
The hardest part of this practice is not identifying the one most important change. It’s resisting the pull toward the others.
After a difficult show, you feel urgency. The urgency is real — you want to perform better, you want the next show to go well, you care about the work. But urgency applied without discipline just generates noise. The urgency wants to fix everything now. The discipline says: fix one thing properly and you’ll fix more in the end.
I still have to talk myself into this every time I have a rough show. The list sits there, and the temptation to attack all of it is real. But the discipline has produced measurably better results than the scramble, and I’ve seen it clearly enough now that I trust it even when it feels counterintuitive.
One change. Evaluate. Compound.
That’s the whole practice. It’s less satisfying than a dramatic overhaul, and it produces results that are far more durable.
The show you want is built one decision at a time, not reconstructed wholesale after every difficult night. Pick the one thing. Change it. See what happens.
Then pick the next one.