Journaling can be a useful way for self-reflecting, processing, getting clarity and reducing stress and anxiety. If you are considering journaling, it could be helpful to explore different approaches to find one which suits you.
There are lots of publications and web articles which outline methods of journaling, and this link takes you to an article in Psychology Today, which outlines 8 different journaling techniques. https://www.psychologytoday.com/gb/blog/here-there-and-everywhere/202001/discover-8-journaling-techniques-better-mental-health
If you think journaling might be helpful to you, have a look and see if there is something which suits you.