I think this was a decent book. I like the idea of thinking about "self improvement" from the lens of local maximums/minimums, and in some cases it works really well. The need to move backwards in order to move forwards is an important one (e.g. electric cars were always somewhat of a liability for the early adopters, but as they became more mainstream they've started to be better than ICE cars in many aspects; if we never had the early adopters who were willing to make certain trade-offs, EVs would never be where they are today).
The problem with the book was that sometimes the analogy felt a little forced. For example, there was the description of prescribed/controlled fires in forest burn management to prevent larger, uncontrolled fires, which the author tried to fit into the "local maximum" analogy. I felt that didn't really work. It was as if he had a nice story, maybe interviewed a couple of people on it, and didn't want to waste it, so "forced" the story into the local maximum mould.
And as much as I loved the military stories, which were regular occurrences early in the book, they suddenly disappeared and it created a bit of a cognitive dissonance - I was left wondering where they went!
Overall could have been shorter (you don't really need a book to teach the ideas), could have done with a bit more tighter editing (sometimes poor use of the analogy; last chapter on the really big "global" issues probably not necessary, especially given the wicked problem nature of them, which the "local maximum" analogy is often very inadequate to frame), but still largely enjoyable and I did learn a thing or two.