Keeping journals to the Therapists is healthy for people.
There is mystery to written words,when we face the next agenda,struggles or feelings in black and white,its better than bottling it within.
Expressing our deepest dreams or whatever in written forms free the brain of mindless clutter,giving room for clearer thinking.
Food diary,dream note,sermon diary or spending sheet are good for reference purpose.
I love gratitude note of all.Drain the brain,scribble it out to the wind will make you focus and stay happy