Based on my encounters with people and works, I have identified qualities that make an artist.
Perseverance is the intensive work attitude towards accomplishing the task. A little theory or an equation is enough to solve a problem, but practising this over a problem corpus and time-constrained testing would produce quality work.
With the incremental and iterative approach, they accomplish the task. Each incremental step itself is functional and objective.
The amount of time, strength, and the number of attempts, regain from fall, all losing without morale.
Artists are extremely practical. They know what material - people or things are made of because they have spent long enough time studying and observing. They know their strength, how much work they can do, what is impossible.
Understanding of the self
Before anything, they know themselves - their habits, mood cycle, impatience, thoughts, desires, etc. They are not afraid to be alone with thoughts.
Long term Training
These people undergo phenomenal training in years either through schooling or hard lessons taught by hunger and bureaucracy.
They make it perfect the first time, the tenth time and every time. Knowing the ingredients and how they interact, artists have a template of actions. One way to achieve consistency is by writing down the materials, working with them, and timing for various steps in as vivid detail as possible.
Ability to stay silent
One thing an artist learns after an understanding of the art is to know the subtlety of work. They naturally will become humble.
Artist is well versed in understanding their position in surroundings.
The artist become mindful of the precision of the tools, makes gentle maneuvers.