I finished The Poker Mindset, and tbh there were a few interesting things in there. Well, just three actually (I sense another numbered list coming).
i) Classifying opponents in scales of loose/tight, passive/aggressive, straightforward/tricky, is good, but you need to try to understand why they play that way to get a more subtle insight into how they play. Tbh, this is easier said than done, but it at least made sense to me, and was something I hadn't thought of in that way before.
ii) I'd heard about level 0, 1, 2 and 3 thinking before, but it hadn't occurred to me that you have to be thinking exactly one level higher than your opponents. In other words, if he's just thinking about his cards, there's no point in trying to, for example, represent a flush you don't have, when the flush card comes on the river, because he's just thinking 'Ooooo. I paired my Ace!'. Therein lies the cause of Fancy Play Syndrome methinks.
iii) When they map their seven principles of The Poker Mindset over to advice for real life, I was struck by the fact that they pretty much hit upon the way I've always tried to live my life anyway (again easier said than done), which is perhaps both why I'm attracted to poker, and games in general, and why I thought a lot of what was in the book seemed fairly obvious.
I always try to picture my passage through life like swimming at sea (watch out, it's Sunday morning, I need to replace a broken hook on the bedroom door and a broken light fitting in one of the bedrooms, so I'm in 'avoidance activity' mode, and am about to get all philosophical). There are lots of interesting and enticing islands that I could visit, but there are also lots of currents in the sea. There's no point in trying to swim to Playboy Island if the current's flowing strongly the other way. You have to be realistic about which currents are weak enough to swim against, and which you just have to allow yourself to be pulled along by, always bearing in mind that most currents that are easy to float in end at dangerous waterfalls. I hope that made sense to someone.
Whenever I think about this analogy, I always think of Professor Sir James Lighthill, one of the great Fluid Dynamicists of the last century, and a Ronny Barker lookalike.

His hobby was swimming around islands, using the currents to help make it easier. And even better, he always used to swim on his back. He carried on doing this literally until the day he died aged 74 when he washed up on a beach after having a heart attack. Not a bad way to go, doing something he loved. I met him a couple of times, and whenever I told him about my research, he always went, 'yeeeeeeeeeerrrrrsss'. Never said anything else. Better than talking to a typical Russian professor. They usually tell you that Kolmogorov did that back in the 50's (he didn't). And a final story. About 20 years ago, I was at a conference, as was a fellow PhD student, and massive arsehole, who got pissed, went up to Sir James, and started telling him that he'd made a mistake on page 103 of one of his books ('yeeeeeeeeeerrrrrssss'). I, and several now distinguished colleagues, were peering at this from a distance to judge Lighthill's reaction. Didn't see how it ended as we all did a runner to get away from Captain Arsehole and avoid having to spend the evening in the pub with him. Anyway,
to Sir James and his huge swimming trunks.
Suppose I have to fix that hook now.