Hi Nicole:
Of the many ways teachers use journals, tracking progress and time spent with lectures is one of the more pragmatic (but very useful) forms some teachers elect to take.
I think a journal is a very personal tool, and teachers should use it the way they feel they can get the most benefit. Some have told me journals don't work for them that's fine.
For those that are able to consistently use and record their thoughts, they will have an invaluable resource to reflect on in the months (and years) ahead.
Regards, Barry