What are 5 essentials that make for a successful shoot day?
The ability to see the picture in your mind before you take it.
The ability to ask yourself constantly why you are shooting what you are shooting.
The understanding if what you are shooting and what it will say to the viewer.
That your subject shows up!
…And lastly some instrument to record that which you see (Camera, or whatever)
Check out the rest of the interview, here.