I thought it was a good inspiration with some practical and serious suggestions. It gave me some good concepts (like just "deep work" itself) and really hammered in the point that it's good to take serious time for real deep work, that your life will be qualitatively different if you do.
I would actually recommend reading "So Good They Can't Ignore You" by Cal first. This book made me comfortable with the idea that deep work is what really matters. And although I understood that very feel, things tend to stick with me when I also feel them.
"Deep work" is more practical. He presents different strategies of working to get more depth. Also, there's a lot about how to stop sabotaging your efforts of working deep.