Hi LaTonya:
There are different ways teachers use journals, and some don't do it at all.
Your method seems great, and is more of a functional style that helps record daily events and assist planning for future classes.
Others like to reflect on their thoughts, dialog with themselves how class could have inmproved, jotted notes about future classes (as you do), or explore possible (and impossible) options about the class, the students, the school, the classroom environment, etc.
Regards, Barry