Happiness, true happiness, is an inner quality. It is a state of mind. If your mind is at peace, you are happy. If your mind is at peace, but you have nothing else, you can be happy. If you have everything the world can give - pleasure, possessions, power - but lack peace of mind, you can never be happy.
Doing things like playing music, something that's so natural and basic to human function, running around in nature, eating delicious food. These things are intrinsic in basic, primordial to human beings, so that's sort of a way to return to a blank canvas, allowing my true personality to return.
Usually I design the lighting and when I have the physical set there, I'm not good at going out loosely and saying, 'Do you what you want, give it to the editor, and he'll figure it out.' I physically then walk on with the actors and I say, 'Let's walk until you guys feel the space works for you, and tell me when all that happens.'