Do you want to map all your thoughts?
Well maybe you don't. And I don't think I want it, either. But there is a guy, Lion Kimbro, who wants to and actually did it. And he wrote a book about how to do it: "How to Make a Complete Map of Every Thought you Think". Scary? Yes, definitely, but nonetheless interesting, especially to all the people who are used to having around 50 post-its of notes on their desks (yes, I am one of them).
The book is written as a thought dump, which makes it both slightly unstructured and more dynamic. However, it is clear and detailed enough to give a really good idea of the concept invented by the author, the "notebook system" (although it's more about binders than notebooks). The main idea is to define a methodology to capture any meaningful thought, save it quickly and then categorize it where it belongs. Then, arrange the thoughts in lists, studies and maps (with indexes, references, etc), in order to finally generate the Grand Subject Map of Contents, an abstract graph representing all your thoughts in a tree!
I read the whole book, although I do not plan to try the system myself, both because I don't feel like going to the cinema with a thought binder in my backpack, and because I don't think I need to keep every single meaningful idea that might pop into my head. But it is still an interesting read, that could be of some use when I will restart the development of Minder, a mind-mapping software.
Many thanks to Flammifer for this link!