LOS ANGELES − "Do you see the difference?" I'm sitting in a chair looking at myself in a mirror. Over my gray apron, Brenda Cooper − a stylist, author and professional color analyst − drapes two ...

I think I know myself pretty well, but I still like confirmation. I’ve taken every personality test under the sun, from Myers-Briggs (I’m an ENFJ) to Enneagram (I’m a type two). I grew up in a hippie ...