Research commentary · Research revisit · Future selves and temporal distancing
Can writing to your future self change how today feels?
In an online experiment analyzing 738 participants in Japan, two groups that imagined a year ahead and wrote a letter reported more favorable immediate changes in affect. The time prompt, letter format and extra writing time still need separate evaluation.
The paper first appeared online on 17 February 2021, using data collected on 13–15 April 2020. Affect was measured immediately after one session.
Seeing the same event from a different point in time
Describing a difficult day and looking back on it from a year away draw attention to different things. One records what is happening now. The other makes room for a further question about which feelings or circumstances might have changed by then. Psychologists call this way of placing a current event in a longer time frame temporal distancing. An online experiment published in 2021 used two letter-writing tasks to see whether a shift in perspective went with a shift in how people felt. [1]
Everyone wrote about the present. Two groups went further.
Everyone began by describing how the pandemic affected daily life. The control group stopped writing there. The other groups imagined their daily lives a year later and wrote a short description. One group then wrote a letter from the present to their future selves. The other imagined having lived through the year and wrote back to their present selves. Participants wrote the letters themselves. The comparison therefore tested the combined addition of imagining the future and writing a letter after describing the present. [1]
The changes were measured at the end of one session
Average negative affect fell and positive affect rose in both letter groups. The control group had no statistically significant change in negative affect, while positive affect fell. Self-reported temporal distancing increased in the two letter groups and rose slightly in the control group as well. Changes in all three measures differed by condition. The paper found no statistically significant differences between the two directions of writing on those main changes, giving no basis for treating one as a more effective default. [1]
The authors combined the two letter groups for a mediation analysis. Changes in temporal distancing statistically accounted for part of the shift in affect, suggesting one way to interpret the results. Temporal distancing and affect were self-reported in the same rounds of measurement, and temporal distancing was not itself manipulated separately at random. The analysis cannot establish that it changed first or that it was the only cause. [1]
What if the extra writing time mattered?
The comparison shows how the complete tasks differed within a session. Both letter groups had extra writing to do, used a letter format with a specific addressee, and imagined the future. The design could not separate the effects of time spent writing, the letter format and the focus on the future. Answering the same scales twice may also have affected ratings. The results come from one online session in early-pandemic Japan, with no follow-up the next day or later. Persistence and transfer to other settings remain open questions. [1]
Evaluate the prompt, the letter format and AI assistance separately
For a digital journal, a next study could first test the time prompt itself. Give everyone the same time and length for a letter, then randomly compare letters to the present self with letters to the self a year from now. To examine what the letter format adds, include free writing about the same future without a named addressee. Even if ratings improve after several tasks, those comparisons could help show which feature made an additional difference.
A product that plans to use AI to help people organize their thoughts could run another comparison using the same writing task, with AI prompts in one group and independent writing in the other. Alongside immediate feelings, a follow-up a day or a week later could ask whether people still see anything differently. It could also record difficulty picturing the future, people who stop midway, and experiences of greater pressure. These are design questions for future tests. The experiment examined an activity people wrote themselves and can inform those questions. It provides no evidence about the effects of a generated reply.
Original sources and verification
- Chishima, Y., Huai-Ching Liu, I.-T., & Wilson, A. E. (2021). Temporal distancing during the COVID-19 pandemic: Letter writing with future self can mitigate negative affect. Applied Psychology: Health and Well-Being, 13(2), 406–418. Journal article · Open full text · Kyoto University research note.
The paper was first published online on 17 February 2021. This commentary checked its methods, results, limitations and endnotes on 7 November 2026. It reproduces no research figures, questionnaire items or participants’ writing.
This article includes AI-generated content. AI assisted with search, verification of original sources, and writing and editing the Chinese and English texts. Luoboli conducted no hands-on product test or original interview. The operating team develops Six Realms and provides Heart to Heart and Sleep, creating a commercial interest. This article does not evaluate those products.