The link below gives more detail. It is a basically a flexible style of journal/diary.
You could have a page for sleep where you colour squares for hours you were asleep.
It was the habit trackers (see buzz feed link) that made me think of them for you.
http://bulletjournal.com/
Some examples
http://bulletjournal.com/show-tell-2/
https://www.buzzfeed.com/nicolenguye...nYO#.uo5LmRk38