Personal Game Risk Definition
Define your goal and horizon before deciding what counts as risk.
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 4
- Confidence
- 99%
This model defines risk relative to a personal game rather than as a universal market statistic. Begin with the goal, then attach the relevant time horizon and ask what could stop that goal from being achieved. A 20% market decline lasting three years may be irrelevant to someone investing for 50 years but catastrophic to a retiree relying on fixed withdrawals. The event is identical; the game is different. Once the personal definition is explicit, advice and debates become easier to filter. Someone with another age, family situation, aspiration, or horizon may be making a sound decision for their game without offering a useful template for yours. The output is a personalized list of risks and a clearer decision boundary.
Origin
Extracted from The Tim Ferriss Show
Core principles
- 01Risk is whatever can prevent a specific goal.
- 02Time horizon changes the meaning of the same market event.
- 03Different people can rationally reach different conclusions.
- 04Many apparent disagreements are different games talking past each other.
How to run it
- 1
Name the goal
Write the concrete outcome the money or decision is intended to support.
Pro tip Use an outcome such as funding retirement or preserving autonomy rather than 'make more money.'
Watch out A vague goal produces a vague definition of risk.
- 2
Fix the horizon
Specify when the goal matters and how long temporary setbacks can be tolerated.
Watch out Do not silently switch horizons when markets become uncomfortable.
- 3
Identify goal blockers
List the events, losses, or constraints that could actually prevent the goal.
Pro tip Include behavioral and family constraints, not only market movements.
Watch out Volatility is not automatically risk if it does not threaten the goal.
- 4
Filter outside advice
Ask whether the person offering advice is playing the same game with a comparable horizon.
Pro tip Treat mismatched advice as context rather than instruction.
Watch out Expertise does not eliminate a goal mismatch.
In the wild
Housel said a stock market decline of 20% that lasted three years would not threaten his 50-year goals. He immediately contrasted that with a 90-year-old retired widow on a fixed income, for whom the same event could require a very different answer.
→ The example shows that risk is created by the interaction between an event and a goal.
Common mistakes
Borrowing another person's game
A strategy can be excellent for its owner and dangerous for someone with a different horizon or obligation.
Equating volatility with risk
Price movement matters only to the extent that it can block the stated goal.
Is it for you?
Best for
It is best for investors comparing strategies, tolerances, or advice across different life situations.
Not ideal for
It is not ideal as a substitute for legal, fiduciary, or solvency constraints that apply regardless of preference.
From the transcript
“risk is just the odds that something will prevent you from achieving your goals”
“everyone has very different goals and aspirations and time Horizons so everyone thinks about risk differently”
“risk is a very personalized calculation for everyone”
From the episode
#576: Morgan Housel — The Psychology of Money, Picking the Right Game, and the $6 Million Janitor
Morgan Housel