Bipolar mood diary: what to write each day

A bipolar mood diary is a daily record of how you felt, how you slept, and whether you took your meds. Keep each entry short. Rate your mood on a simple scale, add your sleep hours, and write one line about what happened. The goal is not to write well. It is to leave a record you can read back in a month.

"Mood diary" is the everyday name for this habit, especially in the UK. You may also see it called a bipolar mood journal, a mood log, or a mood chart. They overlap a lot. This post is about the diary side: what to write each day, what a useful entry looks like, and how to read it back each week.

What a bipolar mood diary should contain

Four things, every day. That is the whole list.

A rating for each mood, on a small scale. Depression and elevation at least, each scored separately. Irritability and anxiety if you can. A 0 to 3 scale (none, mild, moderate, severe) works because you have to pick. See MoodSync's mood scales for what each one covers.
Sleep. Rough hours are enough. Harvey's review links sleep problems strongly to mood episodes and poor recovery in bipolar disorder2008, so sleep is the one number you do not skip.
Meds: taken or not. A yes or no. Not the dose, not the brand. Your clinician mostly wants to see the pattern of missed days.
One short note. A line about what happened or what you noticed. This is the part that makes it a diary and not just a chart.

Setting up the scales and deciding what to track is covered step by step in how to track bipolar moods. If you want a ready-made grid to print, the printable bipolar mood chart has one. This post picks up where those leave off: what goes in the note, and what you do with the pages afterward.

A good entry vs a vague one

The note is where most diaries go wrong. "Bad day" tells you nothing in three weeks. A useful note is specific enough that future you, or your clinician, can tell what was going on.

Vague: "Felt off. Tired."

Better: "Depression 2, elevation 0. Slept 10 hours, still flat. Canceled lunch. Meds taken."

Vague: "Great day!"

Better: "Elevation 2. Slept 5 hours and not tired. Started three projects. Talking faster than usual. Meds taken."

Vague: "Stressed."

Better: "Irritability 2, anxiety 2. Argument about money. Slept 6 hours. Missed evening meds."

Notice what the better entries share. They name a number, a sleep figure, and one concrete fact. They also record the good days honestly. A run of "great day" with short sleep is exactly the pattern worth catching, and it only shows up if the sleep figure is written next to it.

A few habits that help:

Write what you did, not only how you felt. "Canceled lunch" is easier to compare across weeks than "low."
Note changes. A new dose, a late night, a travel day, a stressful call. These are the notes you will use later to look for your triggers.
Rate the whole day, not the worst hour.
Keep it under a minute. If it takes longer, you will stop.

Diary, journal or chart?

The words blur, so here is the short version. A chart is numbers in a grid. A journal is longer writing about your thoughts. A diary, in the sense used here, sits between them: numbers plus a line or two. For bipolar disorder, the numbers are what show patterns and the line explains them. Months of diary entries can also be redrawn as a life chart, the timeline view clinicians use. If you want to write at greater length, the mood tracker vs journal post covers how the two fit together.

Paper or app?

Either works. The best one is the one you will still use in March.

Paper is good for a nightstand habit, for keeping the phone out of the bedroom, and for clinics that ask for a printed record. Bipolar UK offers a printable mood diary on its website, where you score each day using its Mood Scale and use a second sheet for daily notes2025. The downside is that you do the pattern-spotting yourself, and missed days stay blank.

An app is good for speed and for seeing sleep and mood on the same chart. MoodSync is built for this: 0 to 3 scales, sleep and meds on one timeline, data kept on your device. A dated entry takes seconds, which matters most on hard days.

You can also mix them. Some people log in an app and keep a notebook only for the longer notes.

Keeping it going on bad days

Diaries usually fail on the days they would be most useful. When your mood is very low or very high, a full entry feels impossible or pointless.

Make a minimum version and allow yourself to use it:

Lowest effort: one number for depression, one for elevation. Nothing else.
Next step up: add sleep hours and meds yes or no.
Full entry: add the note.

A thin entry is far better than a blank one. A gap in the record looks the same whether you were fine or struggling, and you cannot tell which later. If you miss a few days, do not try to fill them in from memory in one go. Pick up today and leave the gap as it is. Writing "missed" is useful information too.

If you are low or unwell enough that the diary feels like another demand, it can wait. If you feel unsafe, contact your clinician or local crisis service first.

A five-minute weekly review

A diary only pays off when you read it. Once a week, at a set time, look back over the last seven days. A Sunday evening works for many people.

Ask four questions:

Where did the numbers move? Any days above or below your usual range?
What did sleep do? Were there short nights before the higher days, or long ones before the low days?
How many meds days were missed, and did anything link them?
What is one thing to mention? Pick one pattern, not ten.

Write the answer to the last question at the top of the week. Over a month, those four lines become a summary you can read in a minute. If you are not sure what a pattern means, the guide to reading mood chart patterns helps, but interpreting it is a conversation for your clinician, not a verdict from you.

Using your diary in appointments

Do not hand over a month of pages and hope. Bring the diary with a few things pulled out:

The overall shape: mostly steady, or where it changed
The weeks you want to talk about, with dates
Sleep and missed-meds patterns from your weekly reviews
Any question you have, such as "did the dose change affect my sleep?"

If you use an app, the visit prep view turns your entries into a clinician-ready summary. For more on what to say once you are in the room, see preparing for a psychiatry appointment.

Questions people ask

What should I write in a mood diary for bipolar disorder? Mood ratings (depression and elevation at least), sleep hours, whether you took your meds, and one specific line about the day.

Is a mood diary the same as a mood log? In practice, yes. People use mood diary, bipolar mood log, and bipolar diary for the same habit. What matters is that entries are dated, consistent, and specific.

Can a diary diagnose me? No. It is a record for you and your clinician to look at together. Diagnosis and treatment decisions stay with them.