Someone recommend me some Latin or Greek books writing on self-observation.
1. observation (with an inner sense) of one's body or what is going on in one's body,
2. observation of one's mind,
3. observation of what one is doing.
I know only Augustinus' Confession, and David's psalms in Old Testament.
I suppose there would be a lot of meditative books by Christians or ethical people writing about the mind, type 2, or ...