How to Keep a Decision Journal: A Simple Template

A decision journal is a record of what a choice looked like before you knew how it would turn out.

That is the part worth preserving.

After the outcome arrives, memory gets cleaner than the original moment usually was. A job that failed can start to feel obviously wrong. A choice that worked can feel more certain than it really was. The hesitation, missing information, pressure, excitement, and assumptions are easy to lose.

A useful decision journal keeps both versions:

Before: What did I know, feel, and choose when the outcome was still unknown?

After: What actually happened, and what do I understand differently now?

You can keep one in Notes, Notion, a notebook, or a dedicated app. The format matters much less than recording the first part while the decision is still live.

A simple decision journal template

You do not need a long entry. Start with this.

That is enough.

Then stop.

Do not keep rewriting the entry as the story develops.

After the outcome: come back to the same decision

When enough has happened, return to the original entry.

Add a second section.

The point is not to grade yourself.

It is to compare two moments that had access to different information.

The person who made the original decision did not know what you know now.

That person is the one you are trying to understand.

A completed decision journal example

Suppose you receive an offer from a smaller company.

The title is better. The work sounds more interesting. You are also tired of your current job and eager to leave.

Your entry might look like this:

A few days later, the recruiter confirms that the job requires two trips every month.

You decide that does not fit the life you want and decline.

Now the second half of the entry becomes:

That is a useful record.

It does not say:

I made the right decision.

It says:

Here is what I knew then. Here is what happened next. Here is what I learned.

Why the before-and-after comparison matters

Without the original entry, the same story could easily become:

I always knew the travel would be too much.

But that is not what happened.

You did not know.

You identified one uncertainty that could change the choice, asked the question, got new information, and changed direction.

That sequence is much more useful than the polished version your memory might produce later.

Research on hindsight bias has long shown that once people know an outcome, it can become harder to reconstruct how uncertain that outcome originally was.

A decision journal gives you a small piece of evidence from before the ending.

It will not remove hindsight bias entirely. It simply makes it harder for the ending to overwrite the beginning.

What to learn across decisions

One entry may help you understand one choice.

The bigger value appears when you have several.

You can start noticing what changes your mind, whether your stated intentions match what you actually do, and which situations keep repeating.

What changes your mind?

Look at the moments when a decision moved.

Was it new information?

A conversation?

More time?

Trying something small?

Pressure from another person?

A change in how you felt?

In the job example, the decision changed because of a fact.

In another entry, you may discover that no new fact arrived at all. You simply became less afraid after sleeping on it.

Those are different decision patterns.

Do you do what you intended to do?

Suppose an entry says:

I am going to wait until Friday.

Then the other person calls Wednesday and creates urgency, and you immediately say yes.

That gap is worth recording.

It does not automatically mean the final choice was wrong. It tells you something about what happens to your plans when pressure enters the room.

Across several entries, the pattern may become clearer.

Maybe urgency repeatedly changes your behavior.

Maybe it almost never does.

The journal lets you find out instead of guessing.

What keeps showing up?

Patterns require repetition.

One anxious decision does not mean you “make bad decisions when anxious.”

One delayed choice does not mean you are avoidant.

But after several records, you may notice something more grounded:

When I am exhausted, I tend to treat relief as evidence that an option is good.

Or:

I keep saying I need more time when what actually changes my mind is talking to the person involved.

Or:

I often intend to wait, then move quickly once I feel someone else’s deadline.

That is where decision journaling starts becoming personal growth rather than record keeping.

How Shadow OS fits

You can do this whole practice manually.

A notebook works. Notes works. Notion works.

Shadow OS is designed around the same basic loop, but keeps the two moments connected for you.

When you record a decision, the current app can preserve the choice itself, the direction you are taking, how you feel, how much it matters, what helped or may help you decide, optional timing context, and a private note.

For decisions worth revisiting, you can set a Look Back and return to that same choice after more is known.

For some questions, you can also use the Ask flow and receive a symbolic perspective from the Book of Changes before choosing. The Signal is there to interrupt your current framing and give you another angle to consider. It does not predict the outcome or make the decision for you.

The longer-term value is not having a prettier journal.

It is being able to compare:

Before the choice → after the outcome → across decisions

That is where the useful questions change.

Instead of asking only:

Did this work?

you can start asking:

What tends to help me decide?

When do my intentions change?

Which pressures keep showing up?

Are my choices building the life I say I want?

Start with one decision

Pick one choice that is still unresolved or newly made.

Record:

• what you are deciding;
• what you are leaning toward or doing;
• how you feel;
• how much it matters;
• what helped or would help you decide;
• when you should look back;
• one note, if there is something you do not want to forget.

Then leave it alone.

Come back when you know something today-you could not have known.