Coaching practices for Time Estimation Accuracy

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

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

• I’m late on something, I shrug, update the calendar, and immediately forget I ever thought it’d take half as long
• My guesses never seem to get any better because I make them, find out the real answer, and then just move on
• My answer came out wildly off and I can feel that it’s wrong but can’t spot where
• Every time I plan something I walk through the steps in my head and it feels totally doable in the time I’ve got
• I glance at the whole thing and go "yeah, a weekend" without ever listing out the actual steps

Practices that may help

1. 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
2. Track your estimates and calibrate
   Compare your Fermi estimates to actual figures when you can, and use the gap to improve future estimates.
   Fermi Estimation
3. Check units and scales for consistency
   Catch order-of-magnitude errors by ensuring your units are consistent across the estimate.
   Fermi Estimation
4. 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.
5. 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
6. Decompose tasks and sum the pieces
   Estimate each sub-task independently, then add them up — the sum is closer to truth than a top-down estimate.
   The Planning Fallacy — Why Your Estimates Are Always Wrong
7. Anchor on the base rate before adding inside-view details
   Start your forecast from the class median, then adjust — do not start from your narrative and adjust to the base rate.
   Reference Class Forecasting
8. Sanity-check against known extremes
   Test your estimate against the clearly too-high and too-low bounds to calibrate your range.
   Fermi Estimation
9. 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
10. Estimate in ranges, not point estimates
    Instead of "my estimate is 500," say "I think it is between 200 and 2000."
    Fermi Estimation

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