One of the many autonomous Sim behaviors that I find extremely irritating is the habit of plopping down in the middle of the floor to do some journaling. Maybe somebody thought it was a cool thing that everyone was into, back when the Sims was created; however, that's not my memory of the time, and certainly not amongst the adult population.

Did Pescado ever create a no-diary hack? Can the behavior be limited to youths? If they'd just go find a chair to do it in, I might not find it as obnoxious - and I'll say the same about the "Hang Out" behavior. Go loll on the sofa - you're blocking the path to the bathroom.

Anyhow, that's my kvetch for today.

I don’t know any mods that restrict which age groups write in their diary or that only let them write in their diary / hang out while sitting in chairs. I only know of mods that block autonomy for those two actions completely.

No Autonomous Diary by twojeffs:
https://simfileshare.net/download/1787683/

No Autonomous Hang Out by twojeffs:
https://simfileshare.net/download/1787685/

You listed in your profile that your highest expansion pack is Seasons so these are links to the Seasons versions of these mods.
For anyone else interested, here is a link to all of twojeffs’ mods where you can navigate to the folder that corresponds with the highest expansion pack you have installed:
https://simfileshare.net/folder/92533/

Great; thanks Corax!