Context
Robin and Dominguez set out a step-by-step programme built on one conversion: earnings are hours of life, so every expense has a price in time. The lasting contribution is the idea of 'enough' — the point past which more spending stops adding to your life.
Who this is most useful for
Readers who want a calmer relationship with money, and anyone whose spending has quietly expanded with their income.
The Big Idea
Money represents hours of your life. Once you price purchases in life energy, 'enough' becomes something you can locate.
Principles to Take With You
Solo Library extracts practical principles from each book and translates them into ideas you can examine, apply, and adapt into a philosophy of your own.
Price things in life energy
Convert a purchase into the hours of work it costs you, then decide.
Using your real hourly rate — after commuting, recovery, and work-related costs — a purchase stops being an abstract number and becomes a number of hours. The question shifts from 'can I afford it?' to 'is it worth that part of my week?'
Why it matters
It gives a single, non-judgemental test that works without a restrictive budget.
Apply it
For a recurring expense
Take one subscription or habit, divide its monthly cost by your real hourly rate, and decide whether those hours were a fair trade.
Keep in mind
Applied to everything it becomes its own source of anxiety and can turn ordinary pleasure into accounting. It also assumes some discretionary income — where spending is already at necessities, the conversion adds guilt rather than insight.
Find the point where more stops helping
Beyond a certain level, extra spending adds cost and clutter rather than satisfaction.
'Enough' is described as a discoverable point, found by tracking spending against actual fulfilment rather than by imposing a target from outside. Locating it is what turns money from an open-ended pursuit into a defined one.
Why it matters
Much money anxiety is about an undefined finish line. Defining it is the relief.
Apply it
When you earn enough but still feel anxious
Track one month of spending in three columns — cost, hours it cost, and whether it added anything. Look for the categories where the hours clearly were not worth it.
Keep in mind
Insecurity is not always about spending. Unstable income, debt, or care obligations are structural, and no reframing dissolves them. The tracking is also demanding, and a lighter version is usually the one that lasts.
Explore next
Mental Models
Real hourly wage
Divide what you actually keep by all the hours work truly takes, including travel and recovery. Decisions look different at that rate.
Put It Into Practice
Convert one expense into hours
Pick a single recurring cost, work out how many hours of your life it takes each month, and decide whether to keep it.
One Question to Carry Forward
One question to sit with — not to answer today, but to keep returning to as your own philosophy takes shape.
What would 'enough' look like if you wrote it down as a number and a life, not a feeling?
Apply this to my situation
Describe what you're dealing with and we'll connect it to one idea from Your Money or Your Life — with its limits, a question, and one modest next step.
Listen to this book’s Solo Library notes
4 min · key ideas, cautions, and one thing to try
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