But when I finally started making a journal it was a lifeline. It works so well for me. I stop worrying about what I'm writing, how well I'm writing it, how I'm structuring it, where I'm storing it... and I just write it.
If it's something pertinent to what I"m working on, then it'll be a note from the last few days. Old notes, I just don't worry about.
I do have a page for "todo" type thing and I'm still working on that and I also write "proper" documentation separately. But daily notes are a huge win for me.
Daily notes are also where I do a lot of scratch pad thinking, and occasionally those come in handy as well.
When taking daily notes... I can just literally fire anything into the note and forget about it.
If it's something I'm actively working on, it'll be in a note from a couple of days back.
If it's something more historic, it can sit gathering dust and I never need to worry about it and maybe if I need something I can just search over the notes files.