Designing components in Figma encourages good design practices by following principles that ensure consistency, adaptability, and responsiveness. Components should be designed whenever UI is reused, can be nested within each other to create more complex designs, contain both UI and UX patterns, use predefined styles, and follow a consistent naming structure. By adopting these principles, designers can maintain uniformity while encouraging creativity and flexibility in their design systems, ultimately enhancing user experience and navigation with less friction.