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TL;DR
Putting emotions into words immediately lowers activity in the brain's amygdala (UCLA, Lieberman 2007). According to Pennebaker's expressive-writing research, writing about your emotions for 15-20 minutes a day over 4 days significantly reduces depression and anxiety scores, and improves immune function and sleep quality.
Source: Pennebaker JW, Psychological Science 1997; Lieberman MD et al., 2007
01 Writing as healing, the Pennebaker theory
In 1997, psychologist James Pennebaker published a landmark study. When participants were asked to write about an emotionally difficult experience for 15-20 minutes over 4 consecutive days, their immune function improved and their doctor visits dropped.
He called this "Expressive Writing." Suppressing emotions takes physical energy, and putting them into words releases you from that suppression.
"Translating experiences into language appears to produce relief from inhibition"
— James W. Pennebaker, Opening Up, 1997
02 What happens in the brain?
🧠 UCLA neuroimaging study
The act of naming an emotion (affect labeling) activates the prefrontal cortex and suppresses amygdala activity. Put simply, writing acts as a brake on emotion.
Lieberman et al., UCLA Neuroimaging Study
↑
Prefrontal cortex activates
Handles rational judgment & emotional regulation
↓
Amygdala activity suppressed
Eases fear and anxiety responses
03 Effects proven by clinical research
20-45%
reduction in depression & anxiety symptoms
Meta-analysis of 31 RCTs
23%
drop in cortisol levels
The stress hormone
4 weeks
minimum for effects
to appear
Consistent finding
In a meta-analysis pooling 31 randomized controlled trials (RCTs), journaling significantly reduced both depression and anxiety symptoms. The effect was especially strong when writing in a way that gives meaning to emotions, rather than merely recording them.
04 A 3-step way to write an emotion diary
Write exactly as you feel, without judgment
Spelling, grammar, logic, none of it matters. Just pour out what your body and mind feel in this moment. It's fine even if "it doesn't quite make sense." That is your honest state right now.
Name the emotion
Instead of simply "it was hard," get more specific: Did you feel wronged? Afraid? Lonely? The more precisely you name an emotion, the clearer your brain's processing becomes, and the less likely you are to be overwhelmed.
Find the patterns
Look back after a week or two. In what situations does that emotion keep arising? Once you spot the pattern, you can respond. Even the awareness that "I get anxious every Monday morning team meeting" is already the start of change.
05 Emotion prompts you can try today
If you don't know what to write, pick one of these questions and write for just 5 minutes.
"When did your emotions swing the most today? What did you feel in your body in that moment?"
"What thought or worry comes up most often these days? If you told a close friend about it, how would you put it?"
"If there were something you wanted to say to your own heart right now, what would it be? What do you most need to hear?"
Recording your emotions is caring for yourself
You don't have to write it perfectly. Just two lines about what you felt today is enough.
Those two lines, building up, will lighten your heart little by little.
Try recording your day with Ongi's emotion diary.
After each conversation, Ongi records your emotional temperature and tags along with it.
Discover your own emotional patterns from the records that build up each day.
Start an emotion diary with Ongi