Research out of New Zealand suggests that journaling, in addition to obvious benefits such as mindfulness, memory and communication skills, can also lead to better sleep, a stronger immune system, more self-confidence and a higher I.Q.
The practice may even help wounds heal faster.
Labeling emotions and acknowledging traumatic events have a known positive effect on a person. Keeping a journal helps to organize an event in your mind, and make sense of trauma. When you do that, your working memory improves, since your brain is freed from the taxing job of processing that experience and you sleep better. This, in turn, improves your immune system and your moods; you go to work feeling refreshed, perform better and socialize more.
SOURCE: New York Times (10/28/18)