I still have the notebook I wrote in but haven't looked in it for years. I feel I would be inhibited if it were digital a notebook feels more private. Yes just write it out no analysis.
I have wear on my teeth from cronic grinding during sleep years ago when I was objectively under huge stress but felt fine . I suggest you write out every possible source of stress you can think of or guess might by in your subconscious past, present ant future. Past e.g. difficult experiences. Present: e.g. financial, relationship. Future: e.g. getting old, sick unable to work. Do this every day expanding on the previous day for a month. I can't say for sure if this stopped my problem but my grinding did stop and never returned.