The Addition-Subtraction Principle
To pick something up, you must first put something down
Chris Williamson's Addition-Subtraction Principle addresses the fundamental reason most New Year's resolutions and new goals fail: people assume their available capacity automatically expands to accommodate new commitments. In reality, adding a new goal—a gym routine, a meditation practice, a side project, a new skill—requires subtracting something that currently occupies that time and energy. Every person's day contains exactly 24 hours, and most of those hours are already allocated. When someone resolves to exercise daily without identifying what they will stop doing to make room, the new habit competes with established routines for limited resources. Established habits almost always win this competition because they have neurological momentum and lower activation energy. The framework demands that every addition be paired with a specific, named subtraction. Want to add morning exercise? Subtract the snooze button or late-night television. Want to add a creative project? Subtract social media scrolling or a recurring meeting that produces no value. The discipline of naming what you will give up forces honesty about whether the new goal is truly worth its cost, which itself filters out goals that are aspirational rather than essential.
- In order to pick something up, you have to put something down.
- Capacity does not automatically expand to accommodate new goals.
- Every addition requires a named, specific subtraction.
- Established habits have neurological momentum that makes them harder to displace than new habits are to form.
- Audit your current time and energy allocationBefore adding any new goal, map how your time is currently spent across a typical week. Include not just scheduled activities but also habitual behaviors: social media scrolling, television, unstructured internet browsing, extended sleep, and low-value social obligations. Be honest about where time goes, not where you think it goes. Most people discover 10-15 hours per week spent on activities that produce neither genuine enjoyment nor meaningful progress. These are the natural candidates for subtraction when adding new commitments.Pro tipTrack actual time use for one week using a simple log before attempting any changes. The gap between perceived and actual time allocation is typically shocking.WarningDo not subtract rest, sleep, or genuine recovery activities. These are not waste—they are essential infrastructure that enables everything else.
- Pair each addition with a specific subtractionFor every new goal or habit you want to add, explicitly name what you will subtract to create the necessary time and energy. Be specific: 'I will exercise from 6-7 AM by eliminating the 30 minutes of phone scrolling before bed and the 30 minutes of snooze alarm in the morning.' Vague subtractions like 'I will be more efficient' do not work because they do not create concrete behavioral change. The subtraction must be a specific, identifiable activity that currently occupies the time and energy the new habit requires.Pro tipWrite the subtraction on the same line as the addition. 'Add: gym 3x/week. Subtract: Netflix after 9 PM on workout-eve nights.' This creates a visible contract with yourself.WarningDo not subtract activities that other people depend on without communicating the change. Unilateral subtraction of family time or team commitments creates relational damage.
- Test the trade-off before committingBefore formally committing to the new goal, try the subtraction for one week without adding the new activity. If you can successfully eliminate the subtracted activity for a week, the space exists for the addition. If you cannot sustain the subtraction for even one week, the addition will certainly fail because the subtraction is the harder part. This test reveals whether your commitment to the trade-off is genuine or aspirational, preventing the common pattern of enthusiastic goal-setting followed by quiet abandonment.Pro tipIf the subtraction feels impossible after a week, you have identified an entrenched habit that may itself be worth addressing before pursuing the new goal.
Williamson describes observing thousands of people in his community who set ambitious New Year's resolutions—daily gym sessions, meditation practice, reading goals, dietary changes—while making no changes to their existing schedules. Within weeks, the new commitments collide with established routines, and the established routines invariably win because they have neurological momentum. The resolution fades not because of lack of willpower but because of lack of space.
Williamson articulated this principle on The Diary of a CEO podcast with Steven Bartlett in December 2025, during a conversation about designing a transformative 2026. He observed that while January 1st has no inherent magic, the cultural pause at year's end provides a structured moment for reflection when life naturally slows down. Williamson noticed through his work as a podcast host and behavioral researcher that the single most common failure mode for goal-setters is the assumption that 'I will just do more.' He draws on the physical metaphor: 'In order to pick something up, you have to put something down.' You cannot hold an infinite number of objects, and trying to carry everything results in dropping the most important things. The framework emerged from observing thousands of failed resolutions in his community and identifying the missing element that distinguished successful goal-setters from unsuccessful ones.