Hell yeah, highly recommend throwing in some navel gazing in there. Events and happenings are important, but those are also the easiest things to remember, but subjective experience is guaranteed to be lost, even to yourself, if you don't note it.

Anyway I'm overselling it now lol, but I even like to scratch out a little "emotional compass" where the four cardinal directions map to

    🙂
😨      😡
    ☹️

I find it useful to draw a squiggle in there to capture how I'm feeling at a glance. Also interesting seeing how predictable my "random" moods actually are, when I look at the weekly/monthly context in which they happened.