James Shelley has an important insight into the importance of journaling:

Writing a journal feels juvenile. That is the beauty of it. Even as you write the words, you cringe in anticipation of how an older, wiser version of yourself will probably ridicule you later. You can almost hear the self-criticism, faintly echoing in from the future. That’s why the thoughts seem childish as soon as you transcribe them into alphabetic forms.

— Journaling Feels Juvenile by Jame Shelley