Joyful | Ingrid Fetell Lee

Why it is included:

The "Mental Health Infrastructure."

Lee, a former design director at IDEO, proves that "Joy" is not an abstract vibe; it is a tangible resource triggered by specific environmental cues (color, light, symmetry).

We include this to remind the leader that they are an architect of experience.

It teaches us to build "Joyful Infrastructure"—environments that physically recharge the soul—proving that beauty is not a luxury, but a functional requirement for human thriving.