Hardly anybody is interested by these metaphysical posts; so for those who are I will give it more or less straight: as it came to me:
This mortal and material world is a closed system, dominated by entropy; it is an energy-consuming world where the tendency is towards destruction, decay and death.
By contrast the spiritual world is the opposite, being eternal and immaterial. It is the world of divine creation, where 'energy' is renewed. Creation adds; and is 'negentropic' - entropy-reducing.
Where there is creation, there is an open system; overall increasing in value.
Thinking can be entropic, or else creative. These are qualitatively different.
Mundane, everyday thinking is brain-based, therefore entropic; uses energy (including electricity), is causally-determined (each step caused by a preceding step) - and therefore mundane thinking tends towards degeneration and collapse.
But Primary Thinking is immaterial, spiritual; does not depend on the physical nervous system. It is generative (not caused by preceding factors, not a consequence of what went before); contributing something extra (something for nothing!) to created-reality.
We could picture spiritual thinking breaking-in upon physical thinking, transforming it, inserting-into it; because the material is a sub-set of the spiritual (the spiritual is the whole; the physical merely part of that whole).
Primary Thinking is a divine attribute, the divine form of creation. We can do it only because we are children of God, and share in God's divinity.
And we can only do it somewhat, sometimes - because we dwell in mortal bodies in this material, entropic world.
Thus, Primary Thinking changes created-reality; changes the world! - and for the better: changes it permanently, eternally.
Primary Thinking is always a positive good and "for the better", because Primary Thinking only happens when we our-selves are in harmony with, pursuing the same creative goals as, God.
Primary Thinking is always 'about' something, always goal-directed: it is purposive thinking, and the purposes are in-line with divine creation.
There is no formula for 'doing' Primary Thinking; except that we need to acknowledge its importance and be aware when it happens. The occurrence is a by-product of serious and sincere effort to understand, to know; in context of love of God and chosen-affiliation to the creative work of God.
When all such factors are lined-up; we will (temporarily) be able to overcome the entropic nature of this mortal life; take-up our divine heritage as children of God, partake of the divine way of thinking, and participate in on-going creation.
And if we do so, we can be (and will be) confident that - by our thinking, directly and eternally - we shall have changed the world for the better.
Note: The above insight was - somehow - triggered by listening to a November 15th 1917 lecture by Rudolf Steiner in an audio version read by Dale Brunsvold. A text version is at https://rsarchive.org/Lectures/19171115p01.html.