Atomic Habits is the best book I’ve read on building habits. Deep Work is the best book I’ve read on focus. Getting Things Done is the best book on processing inbox-style work. If you want a deep treatment of one technique, read those — I’d just be a worse version of them.
The case for my book is that you want a quick way to learn what’s out there before you commit to one system — or you’ve already committed to one and want to know what you might be missing.
Think of it like the difference between reading The Lean Startup versus reading a roundup of ten startup methodologies. Both have their place; they answer different questions.