Catharthis.
As a way to squeeze the... 'undercivilized' thoughts out of my head, I restrict this journal to: "What is going through my head _right now_ ?"
The emphasis on the right now is a reacton to my often sickening habits of overanalysing the past and overcalculating the future. Since I live in neither, I shouldn't be spending the majority of my time there.

Okay, it's actually just like any old journal. The preceding, however, is a disclaimer emphasizing the fact that the spirit of writing a journal such as this lies in being able to write whatever's going through the head, no matter how stupid and dumb and boring and redundant and stupid it is.