A mood tracker shows when you feel bad and how often. What actually happens on those evenings, only a CBT journal can show. If you already know your “when” and it hasn’t got any easier, the tracker isn’t to blame. It has done its part. Now open a journal.
A mood tracker helped Emma honestly for four months
Emma manages projects at a design studio. In June a friend recommended a mood tracker, and ever since, her phone has reminded her at ten every evening to log the day. She answers with two taps: her mood and what the day held. The whole thing takes five seconds.
This isn’t a story about a bad tracker. Quite the opposite: it taught Emma two things. After a month the tracker showed that after a night of less than six hours her day was always grey, so Emma stopped watching series after midnight. It also noticed that on days with a walk she rated her mood a point higher. From inside a single week she would have seen neither.
Researchers have tested this. In a study by Kauer and colleagues, teenagers with early signs of depression logged their state on a phone and got better at understanding what they felt. The better they understood it, the lighter their depression became. The tracker didn’t treat them, but it helped them notice. For five seconds a day, that’s a lot.
Then the chart stopped showing her anything new
By October Emma had made 120 entries, and the chart hadn’t shown her anything new in a long while. Every Tuesday she taps “meh”. She worked out the reason back in August: Tuesday is the studio’s planning meeting. But she can’t do anything about it, because her manager sets the meeting and has no plans to cancel it.
One Tuesday went differently. At the meeting her manager asked about deadlines, and Emma’s stomach stayed in knots until evening. Then her sister Kate called: she was getting married. Emma cried with happiness for the whole call. Later, at ten, the reminder came, and after a second’s thought she tapped “meh”, because she couldn’t find another option for a day like that.
Work anxiety and joy for her sister turned into one grey dot in the middle of the scale. The tracker didn’t get it wrong: one number can’t hold two feelings, so it shows the average. The author of an essay on five years of mood tracking describes the same thing: on average, a day of joy and grief looks like an empty day.
Three signs your mood tracker has shown you everything it can
Emma could easily have decided the tracker was broken: she logs day after day and learns nothing new. But the tracker has simply finished its part, and now she needs a journal. You can recognise this moment in yourself by three signs.
- You know when it will be hard without opening the chart. Sunday evening, after calling your parents, on meeting day. If the answer comes at once, the tracker has already found your hard evenings.
- You’ve known this for a month, and nothing changes. Emma learned about sleep and started going to bed earlier. She learned about Tuesdays too, but couldn’t see what to change in them.
- You tap the same face and think, “yep, again”. The mark saves a bad evening but doesn’t explain it.
If none of these signs fit, keep logging your mood. A tracker needs three to four weeks of daily entries to tell your pattern from coincidence, so don’t drop it earlier.
Your tracker is still looking for your hard days
Keep going for two more weeks and check the chart once a week.
Let both do their work
Keep the daily log and unpack only the evenings that repeat.
CBT journal vs mood tracker: one finds the hard days, the other unpacks one of them
Their features overlap these days: trackers have notes, and CBT apps have mood scales. So ask yourself a different question: what job are you giving them? A tracker works like a scout who walks the ground for weeks and plants flags on a map. A journal comes to one flag and digs up what lies underneath.
And CBT has nothing against numbers. In the NHS thought record you rate your feeling twice: at the start and at the end. And when a therapist helps someone get back to things they used to enjoy, they ask them to keep an activity and mood diary, which is the same tracker on paper. So the difference isn’t the number but what you write after it.
| Mood tracker | CBT journal | |
|---|---|---|
| Why you open it | To find your hard days | To unpack one hard situation |
| What you record | How you feel right now | One moment of the day |
| How long it takes | 5–30 seconds | 5–10 minutes |
| What you’re left with | A rating, tags, a chart | What happened, what you told yourself, another view, a next step |
| When to open it | Every day at the same time | When a feeling hits |
| What it can’t do | Explain what happened | Work every day in five seconds |
| What it looks like | A scale of five faces and tags | Questions step by step: on paper or in Leaflo |
Ten minutes in a journal showed what Emma tells herself after the meeting
The next Tuesday Emma tapped her usual “meh” but didn’t put her phone down. She opened a journal and gave herself ten minutes to unpack not the whole day, not work in general, just the one meeting. Here is her entry, shortened.
What I feel. Not “bad”, but anxiety at 7 out of 10 and a little shame.
What happened, as a camera would see it. My manager asked when the mockup would be ready. I said “Friday”. He nodded and moved on to the next question.
What I told myself. “He’s decided I can’t cope. I’m letting everyone down again.” There it is: the sentence Emma had been squeezing into a smiley for four months.
What supports this thought, and what doesn’t. For: last month I pushed back one deadline. Against: he asks everyone about deadlines in turn, and he said nothing bad about my work. A nod is just a nod.
Another view. Here Emma can take one of two paths. The first comes from CBT: find a more accurate sentence. “One deadline already slipped, and I’m afraid it will happen again. But today nobody said I can’t cope.” The second comes from acceptance and commitment therapy: don’t argue with the thought, name it as a thought. “I’m having the thought again that I let everyone down.” The thought doesn’t go anywhere, but Emma stops treating it as a fact.
One step. On Wednesday morning I’ll send my manager a short update on the mockup before he asks.
Right now. Anxiety is down to 5, not to zero. That’s how it should be: an entry doesn’t promise the anxiety will go away. But Emma now understands what hurt her and knows what she’ll do tomorrow.
Notice how her entry began: with a precise word for the feeling. When you name a feeling with a precise word, it quiets down a little. In experiments by Lieberman and colleagues, the brain reacted less to angry and frightened faces when a person labelled the emotion with a word.
In the last line Emma added: “And today Kate told me she’s getting married.” Now the day has two evenings in her journal, an anxious one and a happy one, and the grey no longer swallows the joy. We walk through an entry like this step by step in our CBT diary example.
Think of the last grey day in your tracker.
Your answers stay on this device. At the end you can print them or save as PDF.
A month later, her entries found one thought across three different evenings
Emma didn’t delete the tracker. Every evening she still taps twice: it’s her thermometer. But when the thermometer shows the familiar dip, she takes one moment of that day and unpacks it in her journal. Usually that’s Tuesday and one more evening a week.
In a month Emma wrote six entries and found in them something the chart never showed. The sentence “I’m letting everyone down” came up after the meeting, after a message to a friend she had left unanswered, and after she was late for a family dinner. The tracker was looking for when Emma felt bad, and the journal showed what she tells herself. And it turned out it wasn’t about Tuesdays at all.
Tuesdays are still hard for Emma. But now she recognises her sentence the moment it shows up, and she can bring six entries to a psychotherapist if she decides to. The chart will be useful too, because it will show the therapist when Emma feels bad, and the entries will show what she thinks on those evenings.
Journal or mood tracker, or both: how to choose for your situation
Choose a tracker if you can’t name your “when” yet. It also suits people whose journals died after two weeks. And if a doctor asked you to show how your mood changed over a month, thirty short marks will tell them more than three long texts.
Choose a journal if you already know your “when” but it doesn’t change anything. If you log hard Sundays for another month, they won’t get any easier. Instead, unpack one Sunday and find the sentence you tell yourself in it.
Choose both if you already have a tracker and the habit holds on its own. Don’t break a habit that works; add one entry a week to it, on the hardest evening. We explain how to connect a rating to an entry in our article on using a mood tracker inside a CBT journal.
A tracker has a hidden advantage: you can’t get stuck in it. In a journal, getting stuck is easy: someone writes the same thing for forty minutes and closes the entry more anxious than when they opened it. Emma avoided this with two rules: one entry is one moment, and ten minutes that end with one step. We write more about these rules in our piece on a negative thoughts diary without rumination.
Leaflo starts with naming the feeling, not with a smiley
A number tells you the evening was grey. It doesn’t tell you which sentence made it that way.
That is the real difference between a CBT app and a mood tracker, and it’s why we made Leaflo for the second when Emma didn’t put her phone down. In Leaflo you start not with a smiley but by naming the feeling: anxiety, shame, overwhelm. Then the app asks questions written for that feeling, one at a time: what happened, what you told yourself, how else you could look at it, what to do next. You don’t pick the questions yourself, so you start writing before you have time to change your mind.
Leaflo keeps your entries on your phone and locks them with a PIN or Face ID. You can export the entries you need as one file and show them to your therapist. Every finished entry grows a tree in your garden, and there’s no streak counter in the app to shame you for missed days.
Leaflo doesn’t replace therapy and doesn’t promise your anxiety will be gone by the end of an entry. What it gives you instead: you understand what happened and know what you’ll do tomorrow. And keep your tracker. It did its part well.
