Importantly, not every boundary is a rejection of another person. Sometimes it is simply a refusal to participate in harmful patterns. Asking for respectful communication, declining last-minute demands, or limiting contact after repeated violations can look unfriendly to those who benefited from unrestricted access. However, that perception does not make the boundary unkind.
This distinction matters because punishment is aimed at causing pain, while a boundary is aimed at preventing it. The former seeks control over others; the latter restores control over oneself. Once this difference becomes clear, the quote reads less like a defensive slogan and more like practical guidance for emotional survival. [...]