I've been using the Bullet Journal method for managing my tasks and notes. As much as I want a digital, cloud based task manager to be my go to, there's just something about putting a pen to paper that sticks better with me. I suspect it has to do with growing up in a world where I had to write something down to record it.
I'd like to use it more to record thoughts, so that I could write more and better. I often find that the little nugget that was in my head disappears so quickly into an abyss of thoughts and memories.