For a long time, I thought the rule of three was a tool for people who didn’t have much going on.
I had a lot going on. I’d come into a day with 12, 15 things on my list. Some days I’d knock out 9 of them and still feel behind because of the 6 I didn’t touch. That math never made sense to me at the time. It took a while to figure out what was actually broken.
It wasn’t my capacity. It was my finish line.
What the Rule of Three Actually Does
Most people hear “pick your top three tasks for the day” and interpret it as a productivity ceiling. A constraint. Something for people who can’t handle complexity.
But that’s not what it is.
When you commit to three things and actually finish them, you’ve “won” the day. You can always add more after. Nobody stops you from doing tasks four, five, or six. The rule of three doesn’t prevent that.
What it does is give you a clear definition of success before the day starts — so you stop moving the goalposts on yourself.
Type-A people especially struggle with this. High achievers tend to keep raising the bar mid-game. They finish five things and immediately shift focus to the eight they didn’t touch. There’s no arrival point. Every day ends in some version of “not enough.”
The rule of three fixes that. When you hyper-focus on three things and finish them, two things happen. You move faster because you’re not spreading attention across 15 items. And you actually feel done — maybe for the first time in a while.
The Sunday Version of This
I run a version of this same logic every Sunday during my weekly review.
Most people use their Sunday planning to add to the week. What needs to happen? What am I committed to? What am I behind on? And they end up building a week that already feels overpacked before Monday morning arrives.
One thing I added to my weekly review checklist changes that: I ask myself what I can remove from the calendar.
Not what I should add. What should come off.
Most weeks, I find something. A recurring meeting I haven’t re-evaluated in months. A call that could be a three-sentence email. A block I put in out of obligation to someone else’s urgency. Things that felt necessary when I added them but aren’t moving anything forward now.
This single question — “what can I remove?” — is what keeps a week from collapsing under its own weight before it starts.
It’s the same logic as the rule of three, just applied at the weekly level. You’re not just planning what to do. You’re deciding what success looks like and removing everything that gets in the way of it.
Why This Is Hard for High Performers
Here’s the thing: if you’re someone who genuinely has a lot of capacity, the rule of three feels wrong. It feels like underperforming. You know you can do more.
And you’re right. You can do more.
But doing more and finishing things are different problems.
A to-do list with 15 items and 9 completions looks impressive. But a list with 3 items and 3 completions feels different. There’s a clarity to it. A sense of control. And over time, consistent completion of the right things beats inconsistent coverage of many things.
I’ve watched people with half my energy output accomplish twice as much — because they were relentless about what got on their list in the first place.
The filter is the work. Getting the right three things on the list is harder than it looks.
How to Actually Do This
If you want to try it, here’s how I’d start:
For daily planning:
- The night before (or first thing in the morning), identify your three most important tasks for the day.
- Write them down somewhere visible — not buried in a 20-item list.
- Don’t start anything else until those three are either done or consciously deprioritized.
- If you finish all three by 2pm, great — you can add more. But you’ve already won the day.
For your weekly review:
Before you add anything to next week, ask: “What can I remove from my calendar?” Look for meetings you haven’t re-evaluated. Blocks you’re holding out of habit. Things that were urgent three weeks ago and aren’t anymore.
Remove one thing. Just one. Then plan the rest of the week.
Over time, this becomes automatic. You stop letting your calendar be a graveyard for old commitments.
The Finish Line Changes Everything
The most productive people I know aren’t doing more than everyone else. They’re doing less, more consistently, and finishing it.
That’s the shift. Not more capacity. A clearer finish line.
The rule of three isn’t a ceiling. It’s a definition of success. And once you have that, you can stack as much on top as you want.
If you want a step-by-step system for your weekly review — including the calendar pruning question — check out the resource. It covers how to set up this habit so it actually sticks.
