Upvote:0
Good idea to start with. Sati Patthana is the journal of all Buddhists.
Upvote:1
Other ideas:
I've read books about early Buddhism and practices for laypeople
I'm not certain that any writing existed in India at the time of early Buddhism.
Upvote:2
With the intention of increasing Sati some monks advise to recall daily events. Maintaining a Journal or Diary will help towards this. The number, clarity and detail of what you recall is not so perfect proxy to your Sathi practice. Also it increases memory to study and remember the Dhamma.
Also there is a concept of Pin Potha, which is a journal of all good deeds done. This can include all the categories which you mention and more. Also maybe elements of study.