MENTAL MODEL · M0067

Zero-Based Thinking

DecidemediumDecision Science

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Zero-based thinking is a heuristic question for reassessing existing decisions: If I were not already doing this, knowing what I know now, would I start? Brian Tracy uses it to challenge activities people continue but would not choose again. It is distinct from first-principles reasoning that derives conclusions from basic facts.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Separate “I have already invested a lot” from “Is continuing worthwhile from now on?” to identify commitments for reassessment, then compare the future consequences of continuing, changing, or exiting.

anchor

Anchor fast decisions

Reframing an existing commitment as a new choice can expose persistence based only on inertia or past investment. This reflective tool does not automatically yield the optimal answer: exit costs, obligations, and capabilities already developed still affect future choices.

MINIMUM ACTION

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Practice this model in one real situation:

Choose an ongoing project. Write “If I had not started, would I begin with today’s information?” and your reasons. If not, list future costs, benefits, and obligations for continuing, reducing, or exiting. Select one reversible step and a review date
do not count irrecoverable past spending again as a reason to continue.

Check to track your progress (stored locally)

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Source support: Explicit

link
en.wikipedia.orghttps://en.wikipedia.org/wiki/Zero-based_budgetingEN · Explicit
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link
briantracy.comhttps://www.briantracy.com/blog/personal-success/qualities-creative-thinkers/EN
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