Hey there again Intentional One,
Just sharing my experience with journaling. If it is to remain private, you can always take steps to ensure it doesn't get into other peoples' hands.
Journaling benefits me because it keeps me honest. I can lie to myself (the sin of delusion in Buddhist teachings - self-delusion that is) in my thoughts as they fly through my undisciplined mind. However writing things down forces me to focus and be honest and true to myself. Also there is a much greater learning effect in the written word - so has been my experience. It is more difficult to procrastinate and make excuses for not doing 'X' if I write it in my journal, as the very next day I see it in glowing neon colours as not achieved even though I committed to doing it the previous day.

Enjoy your journey!