What Goes in a Life OS? The Five Layers

A life OS holds five things: a short list of life areas, a place to capture what is on your mind, a small set of records, a few review rhythms, and a handful of rules for deciding. Everything else is optional, and most of what people add to their first version is the part that gets abandoned.

This guide is about contents, not definitions. If you want the definition and the history of the idea, start with what a life OS is. Here the question is narrower: when you open a blank page and start building, what actually goes in it, and what stays out?

The short answer: five layers

Think of a life OS as five layers, from the most basic to the most optional.

Layer	What goes in it	Smallest useful version
1. Areas	The parts of life you want to see together	3 to 8 named areas
2. Capture	Tasks, ideas and commitments before they are sorted	One inbox you check on a schedule
3. Records	The few things you write down as they happen	One line per day, plus session logs
4. Rhythms	When you look at it all and decide	A weekly review of 20 to 30 minutes
5. Rules	Defaults that save you from re-deciding	Three to five written sentences

Most people start with layer 2 (a task list) and never build the others. That is why many setups turn into a long list with no picture of the whole. The layers are ordered by how much they change what you do. Areas and rhythms do the most work, and records feed them.

Layer 1: Areas, the list of what counts

The first decision in any life OS is what belongs on the map. A map with only work on it will show you a life that is all work.

Public measurement frameworks make a useful comparison. The World Health Organization constitution states that "Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." You do not need to adopt that definition, but it shows why a single "health" box is usually too narrow: the body, the mind and the people around you each get their own attention.

A practical starting set has eight areas. This is the same set used by the Life Dimensions feature in Xenith, and it follows the wheel-of-life idea used in coaching rather than a validated scientific measure:

• Health: movement, food, sleep habits, check-ups you want to book
• Mind: journaling, reflection, how you want to think and feel on an ordinary day
• Relationships: the specific people you want to stay in touch with
• Work: projects, output, career direction
• Finances: income, spending, savings, bills
• Learning: books, courses, skills you are building
• Rest: recovery, hobbies, unstructured time
• Purpose: values, long-range direction, what you want your effort to add up to

You can use fewer. Three areas that you actually look at beat eight that you do not. If you are building by hand, the wheel of life tool gives you a quick way to see where each area stands today, and the wheel of life guide explains the method.

Two questions help prune the list. Can you name one thing you would do in this area this month? Would you notice if you stopped looking at it? If both answers are no, drop the area for now.

What your own time already says

Before you design areas, it helps to see what a typical day contains. The U.S. Bureau of Labor Statistics runs the American Time Use Survey. Its 2025 results report that on an average day, 81 percent of people engaged in household activities and spent about two hours on them. Household work is on almost nobody's goal list, yet it takes up a large part of the day.

The same release reports that nearly everyone age 15 and over (95 percent) engaged in some sort of leisure and sport activity on an average day, and that watching TV was the leisure activity that occupied the most time at 2.6 hours per day.

Two lessons follow for the contents of a life OS:

1. Include the unglamorous parts. Household management, errands and admin deserve a home somewhere, usually under Work, Finances or Rest, or as a short "home" list inside your capture inbox. If they are not in the system, they live in your head.
2. Leisure is an area, not a leftover. If almost everyone has leisure time, a life OS that has no place for it is describing a life no one lives. Rest and relationships are where it belongs.

These are population averages, not targets. Use them to check that your map covers where hours go, then rely on your own records.

Layer 2: Capture, one inbox

The second layer is a single place where anything lands before you decide what it is. It can be a note app, a notebook or a task manager. The rule is one inbox, not five.

What goes in:

• Tasks with no date yet
• Ideas you may or may not act on
• Commitments you made to other people
• Questions you want to answer during a review

What stays out: finished work, reference material and long documents. Those belong in a notes or file system. Your inbox is a waiting room, and it works because it is emptied on a schedule, for example during your weekly review.

Layer 3: Records, the few things you write down

Records are what turn a plan into something you can look back on. The temptation is to track everything. The research points toward tracking less, but writing it down.

A meta-analysis in Psychological Bulletin pooled 138 randomised studies on monitoring goal progress. It found that interventions promoting progress monitoring promoted goal attainment (d+ = 0.40), a small-to-moderate effect, and that progress monitoring had larger effects when the information was physically recorded. Treat it as support for the habit of writing progress down, not for any particular schedule or format.

For a life OS, that suggests a small set of records, each with an obvious reason to exist:

Record	Why it earns a place	What to write
Daily intention	Gives the day one or two anchors	One to three sentences, written in the morning
Focus sessions	Shows where deep work actually happens	Date, length, what it was for
One-line reflection	Captures what the day was like while you remember	A sentence or two, written in the evening
Weekly ratings	Makes the whole map visible at a glance	A 1 to 10 rating per area, from your own read
Decisions	Saves re-arguing old choices	The choice, the reason, a date to revisit

Notice what is not here: no running total of consecutive days, no scoring of yourself against a quota. A record is a fact about what happened. If a week has gaps, that is just a week with fewer entries, and the system still works.

Layer 4: Rhythms, when you look at it all

A set of records is not a system until you look at it on purpose. A rhythm is a recurring moment with a fixed question.

Rhythm	Length	The question it answers
Daily set-up	2 to 5 minutes	What are the one to three things that matter today?
Daily close	2 to 5 minutes	What happened, and what carries over?
Weekly review	20 to 30 minutes	How did each area go, and what are the priorities for next week?
Monthly review	30 to 45 minutes	What patterns do four weeks of ratings show?
Quarterly review	1 to 2 hours	Is this still the right set of areas and goals?

If you only keep one, keep the weekly review. It is where the inbox gets emptied, the ratings get set and the next week gets planned. The weekly review guide for life balance walks through one in detail, and the personal review system shows how the weekly, monthly and quarterly reviews fit together. The monthly review template is a ready-made starting point for the third rhythm.

Layer 5: Rules, the defaults you write once

The last layer is the smallest and the most overlooked. Rules are sentences that decide things in advance, so a busy Tuesday does not require a fresh decision.

Examples that people commonly write:

• "Email is checked at 11:00 and 16:00."
• "A new commitment goes into the inbox first and gets a yes or no at the weekly review."
• "One area is allowed to be ordinary this month."
• "Spending over a set amount waits for the weekend."

Keep the list to three to five rules. Rules are cheap to write and expensive to maintain, so each one should earn its place. Revisit them at the quarterly review and delete the ones you no longer follow.

What to leave out of a life OS

A life OS is as much about exclusions as contents. These common additions usually cost more than they return:

• Mirror copies of other systems. If your calendar already holds your events, link to it rather than retyping it.
• Metrics with no decision attached. If no result would change what you do, stop recording it.
• Scores and competition. A life OS is private. Comparing it to someone else's system tells you about their life, not yours.
• Everything at once. Start with the layers above in order, and add detail only after the weekly review is a stable habit.
• Reference libraries. Keep them in a notes system. The OS points to them.

A worked example: one person, three areas

To make the layers concrete, here is an illustrative setup. It is an example for planning purposes, not a real user's data.

Sam works full time, is learning a language and wants to see friends more often. Sam chooses three areas to begin with: Work, Learning and Relationships.

• Areas: Work, Learning, Relationships, each with one sentence describing what a good month looks like.
• Capture: one inbox note on the phone, emptied on Sunday.
• Records: a daily intention written in the morning, a log of each language session with its length, and a weekly 1 to 10 rating for each area.
• Rhythms: a 25-minute Sunday review. Sam scans the three ratings, moves inbox items to a date or deletes them, and picks three priorities for the week.
• Rules: "Plans with friends get booked at the Sunday review, not left open." "New projects wait one week in the inbox."

After four weeks, Sam has twelve ratings and a log of sessions. The first month is not meant to produce insights. It produces enough records to see one pattern, for instance that Learning ratings rise in weeks with more logged sessions. That observation comes from Sam's own numbers, not a template. In month two, Sam adds Health as a fourth area.

Where Xenith fits

Xenith is built around these layers: eight fixed life dimensions with weekly 1 to 10 ratings and a four-week trend, daily intentions, a focus timer that logs sessions, a reflection journal and an insights dashboard that shows the balance across dimensions. You can build the same thing in a paper notebook or a spreadsheet, and the comparison with spreadsheets covers when each makes sense. The structure matters more than the tool. For a longer walkthrough of setup, see how to build a life tracking system.

Frequently Asked Questions