Are you a paper or digital/mobile phone calendar person.
Do you have a fantastic memory and remember it all in your head?
For me it all goes in my mobile phone and each sunday I write up a weekly (whiteboard) calendar on the fridge.
My fridge calendar started many years ago when my boys started all their extra curricular activities and school and later high school and their part time jobs and later Uni trips to the city so on and so forth.
Now my calendar gets written up mainly because of my changing from weekly work hours and when my boys and their family is coming visiting.
…. and because getting older I seem to forget events a little more often lol