Neural Harmony

It is when your mind is perfectly in tune with what you're doing. When you are Going with the flow.
When the adequate parts of your brain for the task at hand are involved while those that aren't remain at rest.
It's the ideal state for a focused experience, to be in the flow.
It's the opposite of cognitive dissonance.

Low drive, absence of motivation can be due to cognitive dissonance, when what you do does not align with what you mind wants.