I have great trouble keeping my brain going in a single direction, it tends to want to go in all the directions, all the time. (I suspect I’m not the only one on Lines with this issue…)
At some point I discovered that writing down my thought process on any given thing helped add some linearity and focus, so I keep a single notebook in which I do that, I like to think of it as a ‘lab notebook’ for my life. Often the contents are fairly trivial.
As an added benefit, when writing my thought processes down, there is usually an obvious conclusion which also gets written down. This act is usually enough to tell my brain to stop thinking about it now.
As to tools… I’m currently using a “Nanami Seven Seas Crossfield A5” which is filled with Tomoe River paper (@bobbcorr) and is delightful to use with fountain pens. I also have SABLE quantities of ink in a drawer (stash acquisition beyond life expectancy).
One tip for anyone that writes daily entries in notebooks, have 2 pens inked with different colours and alternate them each day, it makes it easy to see where today’s entry has started as well as finding older entries. And if you use fountain pens, change the colour whenever you run out of ink, then last weeks entries look different to this weeks.