i need structure to survive and it helps to add things to my calendar, because in my brain it's like i've "signed up" to do something for a certain amount of time. whether its a hobby, workout, researching a project, an errand etc it goes in my calendar or to-do list.
even if i already did x thing that day, i put it on the list just to cross it off which feels nice :-)
it helps me not gaslight myself into thinking i didn't do anything because i can look at the list!