Self-Help
Design a rule instead of relying on willpower
By Ivan Petrov · 4 March 2025 · 5 min read
A practical walkthrough of how to design a rule instead of relying on willpower, drawn from the audiobook The Discipline Engine.
Why this matters
If you have ever tried to design a rule instead of relying on willpower and found it slipping within a week, the problem is almost never discipline. It is that the step was never defined precisely enough to repeat. This guide breaks it into something small and specific.
The short version
A thirty-day system for doing what you said you would, on days you do not feel like it.
Step 1: Get specific
Write down exactly what "design a rule instead of relying on willpower" means in your own week. Name the day, the time and the trigger. Vague intentions collapse under a busy schedule; a named slot survives it.
Step 2: Shrink the first attempt
Make the first version so small it feels almost trivial — five minutes, one page, one conversation. The purpose of attempt one is not results. It is proof that the slot works.
Step 3: Build the repeat
Repeat it three times before you judge it. Most people abandon a good method after a single awkward attempt. Three repetitions gives you real information about whether the method fits your life.
Step 4: Handle the bad week
Decide now what you will do when you miss. A missed day is data, not failure. The rule that protects progress is simple: never miss twice in a row.
Common mistakes
- Starting with the hardest version instead of the smallest
- Changing three things at once, so you cannot tell what worked
- Treating one missed day as evidence that the whole approach failed
Where to go next
The full step-by-step system, including the worked examples and the four-week schedule, is covered in The Discipline Engine — a 51-minute listen narrated by Tom Reeve.