Keeping faithful to the root of dedication I submit humbly to truth. Where there is heart there is hustle.
There are components of mental, spiritual, and sensory which often times become mistaken as one or the same, when by all measures are completely isolated characters of motivation.
The mental hustle is an ongoing search for all technical aspects to provide option resolution. It's research and development combined with catalogue. The trial and errors for success if you will.
Next is the spiritual mind and body. The root causes of conviction to do what you do. This is a non negotiable component and often does poorly in business, but is oh so historical or rich in spirit.