Others are born with a brain more ready to understand math, or writing screenplays, or software engineering, or business management - and bumble their way through communication, getting a lot wrong, not knowing where the lines are between their successes and failures, and generally having a miserable time.
Books like these define specific scopes to focus on as worth investing time and energy in, with the promise that understanding in these areas will definitely bring reward, as unintuitive as this may seem [to these people].
I wouldn't mind similar ones that explain learning how to learn, on a related note.