If there is one tool (if I can call it that) that changed my life, it is Org Mode. I was a Vim guy who in a desperate attempt to get digitally organised was forced to give Org Mode a try and got sucked into Emacs. I now live better organised, with far less anxiety and remain unfazed at the multi-tasking demands of the corporate world, all thanks to this major mode.
I use org mode as simple outline or table but so far the organization part still evades me.. I guess I'm too chaotic still to understand how to make real good use of it.
You start off first writing simple outlines, and then you start creating todos, and then maybe you start to look at agendas to organize your todos (note: I rarely do this).
The biggest game changer for me was org-roam. It's essentially a database of all my files where I can add snippets or link to other files, or whatnot.
The TODO stuff I use a rough general guide of where I am, but I do not strictly adhere to it.
Essentially: Make Org-Mode work for you and your mindset, don't feel the need to bend to it.