Hi Wendy:
Chronological jorurnalizing is helpful if that works for you. I've found teachers use journals for all types of reasons, such as narrative, choronological, reflective, phiolosophical, student oriented, personal-oriented, critique based, curriculum-based, among many other versions.
What is good is each teacher decides what works for them. It's great to look back and review comments. These usually reflect growth, even if it's in the form of "wow, I said THAT?". That's growth!
Regards, Barry