There was at least one good tip from this book: Dale Carnegie says that when you’re critiquing someone, you should say ‘you’re good at all this stuff and you could do this other stuff better’, instead of ‘you’re good at all this stuff but you’re terrible at everything else.’ And instead of but, it sounds effective but I haven’t actually tried it yet.
The rest of How To Win Friends and Influence People was about the author trying to find different ways to rephrase the ideas ‘consider the matter from the other people’s perspective,’ ‘act like your appreciate their ideas,’ or ‘just flatter them’. Give me a red pen and some money and I could summarize all 277 pages of this book into 50.
So no, I wouldn’t recommend this book. To be honest, I only read it so that I could tell other people I had, since How to win firends and influence people is one of those books everyone’s heard of but never read.