I agree with this as well. Reading this book really helped me get organized.
Some of the information on it is getting a _little_ bit dated. In particular, it talks a lot about the different 'contexts' you have your tasks to complete, like at home, at work, at a coffee shop, etc. I feel like this holds up a little bit less nowadays, because almost the entirety of all my work can be done if I have my laptop with me.
This book is a great foundation for you to build off of and make your own 'system'.
Contexts should be adjusted to make them personally useful - mine are mostly categories like "work", "home", "community group" so that I can sit down and focus on work tasks without seeing other stuff, and then I can spend a solid hour working on my community stuff, etc. I also have a couple place- contexts: "house" for things like fixing a thing, "9-5" for tasks that have to be done during business hours, and if I have travel etc coming up I might sort some stuff into "offline", like reading a bunch of docs I have downloaded.
I don’t think the idea of contexts is dated at all, it just sounds like it doesn’t apply to your situation specifically because you have special circumstances. Most people don’t have that flexibility. It’s important to understand when things don’t apply only to you vs when they really don’t apply generally (when giving advice).
I find the idea of contexts holds up even more importantly - In fact if you are constantly context switching (social phone at work, etc) it may be something you have to enforce yourself
Some of the information on it is getting a _little_ bit dated. In particular, it talks a lot about the different 'contexts' you have your tasks to complete, like at home, at work, at a coffee shop, etc. I feel like this holds up a little bit less nowadays, because almost the entirety of all my work can be done if I have my laptop with me.
This book is a great foundation for you to build off of and make your own 'system'.