Soul. Don't forget Soul. It's another one of those invisible essential essences, one which we often forget, overlook or pretend doesn't exist.
Soul.
"I would advise you to remember that you did not create the disaster that the world is experiencing, and you alone are not responsible for bringing the world back to balance. A primary responsibility that you do have, however, is to cultivate happiness in your own life…
Because, finally, it is the soul that must be preserved, if one is to remain a credible leader. All else might be lost; but when the soul dies, the connection to earth, to peoples, to animals, to rivers, to mountain ranges, purple and majestic, also dies. And your smile, with which we watch you do gracious battle with unjust characterizations, distortions and lies, is that expression of healthy self-worth, spirit and soul, that, kept happy and free and relaxed, can find an answering smile in all of us, lighting our way, and brightening the world." - Alice Walker