Here’s an interesting quote by William Walker Atkinson:

“The occult masters have ever impressed upon their pupils the importance and necessity of acquiring the power of Mental Concentration, and all trained and developed occultists have practiced and persevered toward this end, the result being that some of them attained almost miraculous mental powers and influence. All occult phenomena is caused in this way, and all occult power depends upon it. Therefore the student of Mental Influence should devote much thought, time and practice to this most important branch of the subject.

It is a fact known to all students of mental phenomena that very few persons possess more than a very small degree
of concentration. They allow their mental forces to become scattered and dissipated in all directions, and obtain little or no results from the same. In the degree that a man is able to concentrate, so is he able to manifest mental power. A man’s power of mental concentration is to a great extent his measure of greatness.

Mental Concentration, in practice, consists in focusing the mind upon a given subject, or object, firmly and fixedly, and then holding it there for a certain time, fully intent upon its object, and not allowing itself to be diverted or attracted from its object. It likewise consists in the correlative power of then detaching the mind from that subject, or object, and either allowing it to rest, or else focusing it upon another object. In
other words, it either gives undivided attention or else inhibits (or “shuts off”) attention from given subject or object.

To the reader who has had no experience along the lines of Mental Concentration, it may seem like a very easy task to focus the mind upon a subject, and then hold it there firmly and fixedly. But a little practice will undeceive such a person, and will bring him to a realizing sense of the difficulty of the task.

The mind is a very restless thing, and its tendency is to dance from one thing to another, darting here and there, soon tiring of continued attention, and like a spoiled child, seeking a new object upon which to exercise itself.

On the other hand, many people allow their minds to concentrate (involuntarily) upon whatever may strike the fancy, and, forgetting everything else. They give themselves up to the object attracting their attention for the moment, often neglecting duties and important interests, and becoming day-dreamers instead of firm thinkers.

This involuntary concentration is a thing to be avoided, for it is the allowing of the attention to escape the control of the will. The Mental Concentration of the occultists is a very different thing, and is solely in control of the will, being applied when desirable, and taken off or inhibited when desirable.

The trained occultist will concentrate upon a subject or object with a wonderful intensity, seemingly completely absorbed in the subject or object before him, and oblivious to all else in the world. And yet, the task accomplished, or the given time expired, he will detach his mind from the object and will be perfectly fresh, watchful and wide-awake to the next matter before him. There is every difference in being controlled by involuntary attention, which is a species of self-hypnotization, and the control of the attention, which is an evidence of mastery.”

Notice the obvious difference between the mastery of concentration (fully under the power of the Will) Vs “involuntary concentration” – such as watching Netflix, playing a video game or internet browsing, where there’s nothing under the control of the Will. Quite the opposite, all your attention is being directed by a company or an app to the goals they so desire.

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