I have never been one to keep a diary,but I know many folk so do( my wife has done so and it has been a very useful reference to check memories of particular events in our lives together)
However ,I suppose my anthology posted here on PS has been in some cases a kind of 'poetry diary' in a couple of ways...
My anthology could trace chronologically my 'obsessions' with particular forms and hence hopefully my development of this hobby of mine...
...and over the past decade of residence here many of my poems could be classed as topical to the world we have shared in that time ,and in my personal world as this link ,below, ,would example to a particularly key event in my life that I shared to close my last blog
https://www.poetrysoup.com/poem/crisis_727094
Am I alone in using my poetry here as a 'sometime poetry diary' ? a kind of 'seasoning' so to speak!
Could some of your poetry posted here since you joined PS be considered as a diary of sorts ,as you have so responded to events in your life?