Radical Candor — Be a Kick-Ass Boss Without Losing Your Humanity

This book changed how I think about feedback — giving it and receiving it. Kim Scott's framework is simple: care personally and challenge directly. Most people do one or the other. Doing both is where real growth happens.

I've worked across every business size from one-person shops to Fortune 5 companies, and the communication problems are the same everywhere. This book addresses the root of most of them.