It was useful for me to read this right now, thank you! I have a lot of free time at the moment, which I haven't entirely been using in satisfying ways--and I think this gives me some insight into a) why a lot of what I've been doing hasn't been satisfying, and b) why the most satisfying thing I've been doing is satisfying.

(I'd heard of the book, but never read it and had forgotten about it.)