As a quick follow on from this evening's session (which was excellent, by the way), I posted the following into the chat, but I'll drop it in here too...
"Getting Things Done" by David Allen is a great resource for productivity, and includes the matrix that Mike showed. I could recommend the book, but searching for "Getting Things Done" or "GTD" and even asking ChatGPT to summarise will probably give you enough of an overview for you to get what it's all about.
Other's I mentioned were "Endless Customers" by Marcus Sheridan, which is the latest incarnation of his best seller "They Ask, You Answer"