"How to Win Friend and Influence People" is a bit dated, but has some good, actionable advice. I find when people hear about negotiations/promotions/job offers

"How to Win Friend and Influence People" is a bit dated, but has some good, actionable advice. I find when people hear about negotiations/promotions/job offers they've missed because of poor communication abilities, and change their tune quickly. But once you're into adulthood, it's rare to get constructive feedback about social skills (even from friends). So it can be catch-22, especially if you aren't very attuned to the reactions of others. It isn't that they don't want to change, but if you aren't charismatic or confident, you're going to have different outcomes in the same situation, so it's self-reenforcing. And infuriatingly, the intrinsically high-charisma people don't know what's needed. A book I can recommend is Keith Ferrazzi's Never Eat Alone. I find the name-dropping cringe-worthy, but it made business relationships click for me, which got me to do more social stuff, etc.