Plume
How to Keep a Mood Journal
(and a Reflection Journal)
To keep a mood journal, write three things once a day: a mood rating from 1 to 5, one line on why, and one thing that helped. It takes about two minutes. Once a week, read the last seven entries together and look for what repeats. Below: the daily format, four example entries, the weekly look-back, how a reflection journal differs, and the mistakes that make people quit.
What is a mood journal?
A mood journal is a short, regular record of how you felt and what was going on around it. It is less about describing your day and more about catching the link between the day and the feeling.
Memory is a poor narrator of mood. A hard Thursday colours the whole week. A good weekend erases a difficult month. Writing it down each day gives you something steadier to look back on than the version your mind tells you later.
It does not need to be long or well written. Nobody reads it but you. The value comes from repetition, not from any single entry.
The 2-minute daily format
Same three lines every day. Consistency matters more than depth.
Rate your mood from 1 to 5
1 is a very low day, 3 is ordinary, 5 is a very good day. Don't overthink it. Pick the first number that feels true and move on.
Write one line on why
Name the biggest reason for the number. Sleep, a conversation, work, the weather, your body. One sentence. If you don't know why, write that. It is useful information too.
Note one thing that helped
A walk, a call, finishing something, ten quiet minutes. Even on a 1 day, something made it slightly less heavy. Over time, this line becomes your personal list of what works.
Optional: one thing for tomorrow
A small, concrete intention. Go to bed at eleven. Message a friend. Leave the phone in another room at dinner. Skip it when you're tired.
Four example entries
What real entries in this format look like. Short, plain, and specific.
A tired Tuesday
Mood: 2
Why: Slept badly, then back-to-back meetings until six.
Helped: Walking home instead of taking the bus.
Tomorrow: Phone out of the bedroom.
An ordinary Wednesday
Mood: 3
Why: Nothing wrong, nothing special. Got through the list.
Helped: Lunch outside, away from the desk.
Tomorrow: Start on the report before email.
A good Saturday
Mood: 5
Why: Long breakfast with my sister. First time in months we really talked.
Helped: Leaving the afternoon unplanned.
Tomorrow: Nothing. Keep it light.
A flat Sunday evening
Mood: 2
Why: Not sure. Maybe the week ahead. Same feeling as last Sunday.
Helped: Cooking something slow.
Tomorrow: Write down the three things that worry me about Monday.
The weekly look-back
Daily entries collect the data. The weekly look-back is where you learn something. Once a week, take ten minutes and read the last seven entries in one sitting.
Ask three questions:
- What repeats? A reason that shows up on several low days, or a helper that shows up on several good ones.
- What surprised me? A day that went better or worse than you expected, and why.
- What is one small change for next week? Only one. Keep it small enough that you will actually do it.
In the example entries above, the pattern is already visible: poor sleep on low days, and a flat feeling on Sunday evenings two weeks in a row. That second one is worth a closer look, and that is what a reflection journal is for.
What is a reflection journal?
A reflection journal goes one level deeper. A mood journal asks how did I feel. A reflection journal asks what did that mean, and what will I do with it.
You don't need to write a reflection every day. Use it when something deserves it: a difficult conversation, a decision, a mistake, a good moment you want to understand. A simple three-question loop is enough:
- What happened? The facts, briefly.
- What did I notice? About the situation, the other people, and yourself.
- What will I do next time? One concrete thing.
Here is a daily reflection journal example, following on from the Sunday entries above:
What happened: Third Sunday evening in a row feeling flat and a bit anxious.
What I noticed: It starts around six, when I check my work calendar “just to see.” The feeling is less about Monday itself and more about not knowing what is waiting.
Next time: Look at the calendar on Friday afternoon instead, write down the first task for Monday, then close the laptop for the weekend.
That is the difference in practice. The mood journal spotted the pattern. The reflection turned it into something you can change.
Common mistakes that make people quit
Most mood journals don't fail because the idea is wrong. They fail because the habit is too heavy.
Writing too much
If an entry takes twenty minutes, you will skip it on busy days, then stop. Keep the daily version to two minutes. Write longer only when you want to.
Only writing on bad days
A journal full of low days tells a distorted story. Ordinary and good days are the baseline that makes the hard ones readable.
A number with no reason
A column of 2s and 4s says little on its own. The one line on why is what turns a score into something you can learn from.
Judging the numbers
A 1 is not a failure. It is information. The journal works best when it is honest, and it is only honest when it is not a report card.
Never reading it back
Without the weekly look-back, patterns stay invisible. Ten minutes a week is where most of the value is.
Starting too big
Mood, sleep, food, exercise, water, and gratitude, all at once, on day one. Start with the three lines. Add more once it is a habit.
Paper, notes app, or mood journal app?
Any of them works. A notebook by the bed is a perfectly good mood journal. The real question is which one you will open every day, and which one makes the weekly look-back easy.
A dedicated app helps mostly with the second part. Numbers are easier to compare when something lines them up for you. If you want that, look for a mood rating, a way to see trends over weeks, a lock, and an export so the record stays yours.
This is also where we should say it plainly: this article is published by the makers of Plume, a journaling app for iPhone, iPad, and Mac. Plume has a mood rating from 1 to 5 on each day's entry, and three guided prompts for gratitude, a memory, and an accomplishment, which map closely to the “one thing that helped” line. Its Insights view shows week-over-week comparisons, and an optional life-theme analysis groups your entries across twelve areas such as work, sleep, health, and family, so the weekly look-back has something to work with.
There is no account and no tracking, entries can be locked with Face ID, Touch ID, or a passcode, and you can export everything as plain text or JSON at any time. You get 21 writing days free. After that the app becomes read-only unless you buy it, and your entries stay readable and exportable either way.
If you would rather start on paper, do that. The format above works the same in a notebook. For more ideas on what to write, see our journaling prompts, or start with the beginner's guide to journaling. If gratitude is your focus, see gratitude journaling in Plume.
A note on care
A mood journal can help you notice patterns and put words to what you feel. It is not a diagnosis or a treatment. If low moods last for weeks, keep getting worse, or you ever feel unsafe, please talk to a doctor or a mental health professional. Your notes can make that conversation easier.
For what research says about writing and anxiety, see journaling for anxiety.
Frequently asked questions
What should I write in a mood journal?
Three things are enough: a mood rating from 1 to 5, one line on why you picked that number, and one thing that helped today. Add more only when you want to. A short entry you keep writing tells you more than a long entry you abandon after a week.
How often should I write in a mood journal?
Once a day, at roughly the same time, works for most people. Evening is common because the day is complete. Then set aside ten minutes once a week to read the last seven entries together. The weekly read is where patterns show up.
What is the difference between a mood journal and a reflection journal?
A mood journal records how you felt and what was around it. A reflection journal asks what an experience meant and what you would do next time. Mood tracking is quick and daily. Reflection is slower and usually tied to one event, decision, or conversation. Many people do both: a daily mood line, and a reflection when something deserves it.
Can a mood journal replace therapy?
No. A mood journal is a tool for noticing, not a treatment. It can make a conversation with a doctor or therapist more concrete, because you have notes instead of vague memories. If low moods last, get worse, or you feel unsafe, contact a medical or mental health professional.
Two minutes a day.
A clearer view of your weeks.
Mood rating, guided prompts, and weekly insights. No account. Free for 21 writing days.