It’s been a while since I read it, but I don’t remember it being particularly preachy about why you’d want to make friends or influence people - whether you were doing so out of some nefarious manipulative reason, or out of the genuine human goodness of your heart - I think it’s more just about how to do so.

And the ‘how’ generally revolves around just being nice to people - being kind, taking care, noticing, being generous and observant and engaging. The whole idea is that you are good to them, which means they’ll be good to you.

All of which I was already intimately familiar with - I actually don’t think I read anything new in that book, it all seemed like pretty standard stuff… but then again there will always be stuff that seems obvious to you, and it a revelation to others.

I certainly think you could do much worse than treating others according to how that book instructs.