The main problem with mental notes is the ink fades.

Words cannot convey how very important keeping notes are. I know it, I knew it, and I still did not do it. I said, yes, this is a good idea and I see how beneficial it is, but I kept procrastinating. Luckily, a persistence conscience is one of my blessings. (Sometimes it doesn't feel that way.) First stage was just jotting down thoughts, mostly on posty notes and sometimes on napkins or whatever was available. I put all of them in a box, no dates, no order for the thoughts. Next stage was dating the notes and then adding them to a journal. That is good as the second writing to record them, helps to secure their place the in my subconscious. Now it is expanding into this online journal, driven by the hope that others may also benefit from the things I have learned.

"When patterns are broken, new worlds emerge."
– Tuli Kupferberg