This book left me with a bad taste in my mouth, as though it were written by someone who wasn't really grounded in experience. I'm not sure if the author was trying to convince me or himself. Perhaps I'm not the target audience, but I'd be interested to hear more about why you liked it, since it was such a disappointment to me.
It’s years since I’ve read it to be honest. I remember finding the parts on how to conduct one-on-ones useful at the time. I don’t recall feeling the author was unsure of himself (and he’s a pretty successful tech leader btw, currently VP Eng at Slack).