About 6 months ago, I bought a Moleskine notebook, and started using it as a kind of professional journal. I use it for setlists when I play live, for rehearsal notes, on sessions I sketch out quick charts, and on every page I note the date, the location, and the artist. It’s kind of cool to look back and have a record of what I’ve been doing, in a way that makes a lot of sense.
I’ve never been a journaler (expect for the time my court-mandated psychologist insisted), but this serves the function pretty well. It’s also awesome to have instant recall of charts and notes from things 6 months ago, when the client calls again.
By the way, kids, forget everything Daniel is teaching you in Arranging 1. This is what real charts look like.