How to keep a decision journal for a decision that affects someone else

A decision journal entry is built around one person's honest accounting: what I believe will happen, why, how sure I am. That works cleanly when the outcome only lands on you — which apartment, which job offer. It gets harder the moment someone else is living with the same decision — a partner deciding whether to move for your job, a co-founder agreeing to a pivot, a kid old enough to have an opinion about the school. The format does not warn you about this, so most people keep writing the single-person version anyway, and end up with an entry that quietly leaves out the one person the decision actually happened to.

The blind spot the format doesn't flag

A normal entry asks what you expect to happen and how confident you are. When someone else's life moves with the decision, "what will happen" silently narrows to what will happen to you, and the other person's reaction gets filed as one more variable to predict — closer to the weather than to a second stake in the outcome. You can be scrupulously honest about your own reasoning and still write an entry that never once asks what the other person actually wanted, only what you expected them to do about it.

The version that is really a case you're building

There is a specific way this goes wrong that has nothing to do with dishonesty on purpose. You write "I did tell her the commute would be rough" or "I did flag the runway risk to my co-founder" — true sentences, written in the moment, that also happen to be exactly the lines you would want on record if this goes badly and you need to show you saw it coming. The entry is not lying. It is quietly organizing itself around a future argument instead of around what you actually believe right now. The tell is usually in the tense: a normal entry describes what you think will happen; this version describes what you will be able to say you thought.

What an honest entry logs instead

Write down three things, not one. What you believe will happen. What the other person believes or wants — in language close to what they actually said, not your summary of it. And, specifically, where the two views diverge and why you are going ahead the way you are anyway. "I think the move is right for the job. She thinks it costs her the promotion she's close to getting. I'm choosing my timeline over hers because I don't think either job waits a year — that's the actual trade, not a side detail." That last sentence is the one most entries skip, and it is the one that makes the whole thing worth reading later.

The test: would you show them the entry?

Not because they get a vote in what you write — this is still your private accounting, not a shared document. But if the entry would embarrass you if the other person read it today, that is a reliable sign it has drifted from an honest prediction into a case file. An entry that fairly states their view, even the parts that make your choice look worse, is one you would be able to hand over without flinching. That is the entry worth keeping.

Reading it back afterward

The outcome pass on a decision like this has to ask two questions instead of one. Was I right about what would happen? And, separately, was I right about what it would do to them? A decision can score well on the first and badly on the second — the move worked out for your career and cost exactly what she predicted it would cost her — and an entry that only tracks your own prediction will read as a clean win when it was actually a mixed one. Reading both lines back is what keeps the next entry honest, because you will remember that "it worked out" and "I was right about the cost to someone else" are not the same sentence.

What this is not

This is not a joint log, a way to get agreement, or a record either of you produces for the other to approve. Two people living through the same decision can each keep their own entry and never compare notes, and the exercise still does its job — it is a check on your own account of events, not a negotiation. The point is narrower than that: a decision that lands on someone else deserves an entry that says so plainly, instead of one written as if you were the only person in the room.

CreedOS's daily check-in has a short note field for exactly this kind of entry — enough room to log what you expect, what the other person actually said, and where the two diverge, in a sentence or two, while it's still fresh. It's free, with no in-app purchases.