Depends on the scope of the mistake. And if I want to cover it up at all. For my writing journals, where I do my creative writing exercises or plotting for a book, I like to see the strike throughs on the passages I "deleted" (if it makes sense). It's kind of a roadmap. For my journaling there's nothing I hate more than a messy page, especially if/when I get the date wrong (happens a lot, sadly) or my attempts at calligraphy go south. I use stickers and washi tape and sticky notes then, however in the end it feels like the cover up is worse than the initial mistake. Maybe strike throughs and a little "oopss!" comment on the side is better in the end.

@Tamara Temple Nook as in the e-reader?

@Cynthia Moss I use A5 size STM//Leuchtturm1917 notebooks.

Can also look at Pinterest for spread ideas, or studyblr (Tumblr users who share their note-taking methods). You can also check stuff like the Cornell System.

I just watched a YouTube video from jetpens about this. Let me fetch the link.

I've been struggling with constant migraines for about a year now. I kept a journal where I jotted down the types of medications I took, the intensity of the migraines and the appointments at my doctor's. Though lately I find this kind of journaling lacking, so I was thinking about keeping something more like a "illness diary" to register what I feel too. Not sure how to go about writing it, though.