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I had this idea, that may or may not have been suggested before. I don't remember a suggestion this specific but there is a possibility.
If you use tarot cards or other divination methods, you can ask the deity or spirit what they suggest you journal about for that entry in your devotional journal.
Depending on your style of divination and/or your interpretations this could be a specific topic or a more general area of life or self.
Example:
I asked Aphrodite for a card to represent a journal prompt, something I should or need to explore.
I pulled the 10 of swords which in the Spirit Halloween tarot deck has an image of a Gryphon.
Upright: Back-stabbed, defeat, crisis, betrayal, endings, loss
The gryphon gives me the vibe of relating to the public face of a being.
Overall this suggests I should write about how a painful or stressful change in my public image affects me and what I think that means.
Which is a rather hardcore topic to start with 😅