Getting Things Done by David Allen gave me a framework to get out of the weeds when I am overwhelmed (usually once or twice a year when I stretch myself): build a to-do list that us complete enough to stop thinking about what you have to do, if a new task take less than 5 minutes just do it right away, and then prioritise the rest.
Deep Work by Cal Newport gave me a way to think about my time management: information work is not the same as a factory line where doing the same thing at similar productivity from 9 to 5 makes sense, and it is important to dedicate long stretch of quality time to be productive (vs busy).
There are no silver bullets, but learning what worked for a group of people, testing it for myself, adapting it, and using it as needed has been helpful to me.
Yes, I read "Getting Things Done": he teaches you to make todo lists! That's it, nothing profound or from another planet. Basically you could get that information in 1 paragraph: "if you're overwhelmed, make a todo list", but he wouldn't have made a lot of money that way...
That's quite a reductionist view of Getting Things Done. There's nothing magic about the system, but someone had to put it together. It has been useful to me.
There is more than that, though. Deadlines, Next Tasks, Weekly list purge/build, Yearly alignment etc etc.
Also how you teach somebody a thing matters.
Stories have a profound effect on humans since the earliest of our days.