Coaching practices for Planning Fallacy

Describe almost anything you are working through and IX Coach finds the practices whose real-world fit is closest. For Planning Fallacy, these are the strongest matches in the current practice library.

Does this sound like the set of challenges you might be facing?

• Every time I plan something I walk through the steps in my head and it feels totally doable in the time I’ve got
• My plan only works if a whole chain of things all go right
• I’m all in on this plan and the success story in my head is so vivid I can already taste it
• I tend to figure out my plan the same morning I’m supposed to start, in a rush to just get going
• I’m putting a timeline on this project from the plan in my head, and it always feels doable

Practices that may help

1. The Planning Fallacy — Why Your Estimates Are Always Wrong
   The planning fallacy is the well-replicated tendency to underestimate completion times even when you know your past projects ran late. The fix is not to "try harder" — it is to switch from imagining the ideal future scenario to consulting your own base-rate history and similar projects.
2. Reference class forecasting
   Before estimating, look up how long similar past projects actually took — not how they felt.
   The Planning Fallacy — Why Your Estimates Are Always Wrong
3. Audit plans for scenario inflation
   Before committing to a plan that depends on multiple things going right, count the dependencies.
   The Conjunction Fallacy — When "More Details" Feels More Likely
4. Run a pre-mortem to interrupt forward narrative construction
   Before committing to a plan, imagine it failed completely — then generate the most plausible story of why.
   The Narrative Fallacy: Why We Can’t Stop Making Stories
5. Separate the planning session from the execution day
   Do your planning in a dedicated session, never on the day you intend to start.
   The Planning Fallacy — Why Your Estimates Are Always Wrong
6. Use reference class forecasting for project estimates
   Estimate how long similar projects have taken historically before estimating your specific project.
   Base-Rate Neglect: Why We Ignore the Odds
7. Run a premortem before committing
   Imagine the project has already failed and work backwards to find why.
   The Planning Fallacy — Why Your Estimates Are Always Wrong
8. Estimate conservatively and act on the conservative number
   When uncertain, use a pessimistic estimate as your working assumption — not your best guess.
   Margin of Safety
9. Steelman objections to your own plans
   Before committing to a plan, state the strongest case against it in its most compelling form.
   Steelmanning
10. Log actual vs. estimated time for every task
    Build a personal database of your own estimation errors so you can calibrate future predictions.
    The Planning Fallacy — Why Your Estimates Are Always Wrong

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