[soulofmischief]

I recommend Logseq if you're taking notes on a computer. Takes a moment to wrap your head around an outliner if you haven't used one, but after a short while notes will fly from your fingertips.

Being able to quickly jot things down and later revisit and expand them is crucial. Logseq also gives you a fresh journal for each day, and you can make and reference your own topic-specific pages as well.