I'm also a big fan of this book, for the same reasons (ADHD management). Understanding the value of setting aside big chunks of time to work deeply and prioritising that time has had an enormous positive impact on how I get things done.
I actually just wrote a giant post [1] about what I've learned about managing ADHD so far. It focuses on the core stuff, but I want to follow it up with a breakdown of how books like Deep Work (e.g. Flow; Farsighted; Thinking, Fast and Slow; How Not to be Wrong) have made a difference for me.
[1] https://medium.com/@sashacollecutt/life-with-adhd-a61cae5a5b...