Here’s an interesting quote from William Walker Atkinson:

“That which we call Personal Magnetism is the subtle current of thought-waves, or thought-vibrations, projected from the human mind. Every thought created by our minds is a force of greater or lesser intensity, varying in strength according to the impetus imparted to it at the time of its creation. When we think, we send from us a subtle current, which travels along like a ray of light, and has its influence on the minds of others who are often far removed from us by space, a forceful thought will go on its errand charged with a mighty power, and will often beat down the instinctive resistance of the minds of others to outside impressions, whilst a weak thought will be unable to obtain an entrance to the mental castle of another, unless that castle be but poorly guarded.

Repeated thoughts along the same lines, sent, one after the other, will often effect an entrance where a single thought-wave, although much stronger, will be repulsed. It is an exhibition of a physical law in the psychical world, and exemplifies the old saying about steady dripping wearing away a stone.

We are all influenced much more than we are aware by the thoughts of others. I do not mean by their opinions, but by their thoughts. A great writer on the subject very truly says : “Thoughts are Things.” They are things, and most powerful things at that. Unless we understand this fact, we are at the mercy of a mighty force, of whose nature we know nothing, and whose very existence many of us deny.

On the other hand, if we understand the nature and laws governing this wonderful force, we can master it and
render it our instrument and assistant.

Every thought created by us, weak or strong, good or bad, healthy or unhealthy, sends out its vibratory waves, which affect, to a greater or lesser extent, all with whom we come in contact, or who may come within the radius of our thought vibrations.

Thought waves are like the ripples on a pond caused by the casting in of a pebble. They move in constantly widening circles, radiating from a central point. Of course, if an impulse projects the thought waves forcibly toward a certain object, its force will be felt more strongly at that point.

A man who thinks Energy, manifests Energy. The man who thinks Courage, manifests Courage. The man who thinks “I can i and- I will” “gets there,” while the “I can’t” man “gets left.” You know that to be true. Now, what causes the difference? Thought — just plain every-day thinking, that’s all.”