What age did you start a diary and what did it look like ?

I was about 12 when I started writing one , mine was pink with a fairy on it and flashing blue lights and a lock. My aunty brought it for Christmas for me. most of my stuff in it was about issues at home and being bullied at school plus song lyrics and a list of my friends, crushes I had and a few drawings , and some weird quotes I found off the internet plus writing about being angry or depressed.