You are buying a used phone. It costs about a week of your work, so you take it seriously.

Three listings open in three tabs. You read the one-star reviews first, because the happy ones tell you nothing. You notice the seller wrote «no faults at all» and that every photo somehow avoids the bottom right corner of the screen. You text a friend who had that model and ask what died first. Twenty minutes later you know more about that phone than the seller wanted you to.

Same evening. Someone asks whether you are staying in that job. Or with that person. Or in that city.

And you say the thing you have been saying for months.

No three tabs. No bad reviews first. Nobody texted. A decision worth a hundred phones, made with less checking than a phone.

You already know how to check things. You do it for headphones, for a flat with a suspicious price, for a gym that wants a year upfront, for a job ad that says «young dynamic team» and pays in «experience». You just never switch that on for the questions that actually shape your week.

This module is where you switch it on. By the end of it you will have three rules you live by written down, with the source of each one named. Everything else in this course runs on that list, so it is worth the ten minutes.

Start with what you already do when money or time is on the line. You look at several sources. You keep what survives and drop the rest. You decide yourself and you do not feel guilty about it. Three steps. Now watch all three vanish when the subject is your own life.

Sources. For a phone you read six reviews. For «should I move back to my parents to save on rent», most people use one source: whoever answers fastest, or a stranger in a video who has never seen your bank account. Sometimes it is an uncle whose experience comes from 1998, when a flat cost what a laptop costs now.

Checking. With the phone you know exactly where to press. The thing the seller left out. The photo taken from the one angle that hides the crack. With a rule about your own life you press nowhere. You ask whether it feels right. That is a weather report on your mood, and at half past midnight the weather is always bad.

The verdict. About the phone you decide alone and you sleep fine. About your own life you keep waiting for someone with more authority to say that this way of living is allowed. Nobody is coming with that permission. Your parents are giving advice to the person you were six years ago, and they mean well. Your manager needs you on Saturday and has an opinion about your priorities.

So why does the careful part of you go quiet exactly where the stakes are highest? Two reasons. One, a phone costs a week of work, and being wrong about a phone is annoying. Being wrong about five years is not annoying, it is expensive, and something in you would rather not look. Two, school trained it out of you. For twelve years the questions about how to live came with a correct answer at the back of the book. You wrote what the teacher expected in the essay about honesty, got your mark, and learned that these questions belong to someone with a red pen. Nobody mentioned that from eighteen onward reality does the marking, and it does not accept essays.

This is not a call to doubt everything by Monday. Most of what you do runs fine on autopilot. But there are six or seven rules carrying the real weight right now, and those are worth looking at. Here is one. A guy takes every job that pays the most, always, no matter what it does to his weeks. Sounds sensible. It came from being fifteen and watching his mother lose her job in one afternoon, and the fridge getting thin for four months. That rule ran his next eight years: two jobs he hated, a course he quit, a girlfriend who got tired of hearing «next month». He never chose it. He absorbed it during a bad year, and it kept running long after that year ended.

Which brings us to tonight, and to the awkward part. A rule you have never said out loud always sounds cruder in words than it feels in your head. That is fine. Five minutes, paper or the notes app, nobody reads it but you. Write three sentences that start with «I always» or «I never», about how you really decide things, not how you wish you did. Money, work, people, time. Then next to each one write where you first heard it: a person, a place, how old you were. If you cannot name the source of one, write unknown. That is the line worth keeping.

Three rules, three origins, probably one blank. Next time we go looking for those origins, because every rule was built to protect someone or to get something for someone, and it is worth knowing whether that someone was you.