One of the first psychologists who in the early twentieth century used the coloring mandalas as a relaxation technique was Carl Gustav Jung. He prescribed his patients coloring mandalas as part of the therapy.
Painting involves the two hemispheres of the brain. When we ponder on the balance sheet and the choice of colors, take a pencil in your hand and begin to shade the cell, then it immediately combines two processes: problem solving and fine motor skills. This kind of therapy, which trains the brain, accustoming it to work on simple tasks and gradually move to more complex tasks.