IP, that "account log" of activities--what worked and what didn't and why--is something I've never thought or heard of before! It's a great idea! I might try it!
I know what you mean about journaling. I did it a few years ago. It helped me to defuse bitterness and to tease apart the tangle of my emotions; but once I identified the emotions, I could deal with them as they came up, so journaling was kind of superfluous.
Your idea does sound like a constructive next step!