Software that's more advanced than a text editor/word processor has been a big help for me. I've tried different apps. Been using Obsidian for over a year now, and I love it. You should find something that works for you, though. It's a very personal thing. The right one will click with your brain, help you keep things organized, and should feel very easy and intuitive. It should feel fun to use and not a chore. There's a lot of choices out there like Notion, EverNote, OneNote, Nimbus Notes, MyInfo, and many others.