It is too bad that many occultists in shamanism, alchemy (I mean the spiritual/occult path here, for those that never heard of it beyond "turning lead into gold"), and the other paths haven't heard too much about Carl Jung.  His ideas are pretty much misunderstood, too.  Having researched him for awhile, I came to realize that a lot of what I thought about Jungian psychology, which is what a lot of others that are only barely familiar with Jungian psychology typically think, was inaccurate.

I really don't know how to introduce this topic, so I'm just going to introduce a few concepts.  Maybe later I will elaborate.

The Collective Unconscious can be seen as an ocean that we are all a part of.  It does not overide inviduality.  Perhaps it gives birth to it.  This can connect to the changewinds in some magick rituals.  Sometimes our dreams seem to connect to others, or to something bigger.  Most dreams are our own individual psyches attempting to find balance and equilibrium, but some, in the process of seeking this balance, reach out into this vast ocean and touches other realms, sentience, and spirits.

Here's an introduction of the Collective Unconscious in Jungian terms:

http://www.lcc.ctc.edu/faculty/dmccarthy/engl204/seven-lecture.htm

The Archetypes should be familiar to many occultists.  They include the gods, as well as other spirits.  Here, I don't plan to enter any debates on the "sentience" of such archetypes, and those smarter and more experienced than us can give dazzling reasons for believing either one, so I suggest it doesn't matter here.  What's important is that they're REAL.  Sometimes, they seem to actually create a physical presence, and leave traces of physical evidence behind to boggle our minds (such as the crop circles*)

* Every time I mention this, someone has to smirk and go, "It was proven to be a hoax by two farmers in England.  As if.

Go ahead, I dare one of you to say that 2 farmers in England did all the crop circles in the last thousands of years, and also since 1950, all over the world!  Go on, your TV told you that, so you know it's true, go ahead and spit out how ignorant we are that we "don't know" all the crop circles around the world in the last several decades were hoaxed by 2 British famers.... and that cereologists can typically tell the fake from the real by certain physical traces so far impossible for us to manipulate.

If you're one of those bursting to give us this, at least go and explore the "scientific and proven explanation" that it's hedgehogs rolling and mating in the fields--that one is funnier.

Btw, anyone ever think of the crop circles as magical sigils?  In such case, their source of origen becomes fairly irrelevent.

For more on archetypes, and how they can filter into our literature, movies, etc and create new symbols and thus new mythologies, click here:

http://www.vinnys.net/campbell.html

Keep in mind that many forms of occultism are into using Archetypes to manifest their magickal will and/or religious mysticism.  But technically, everybody is acting out an archetype.  The Tarot themselves are using archetypes to measure the invisible forces/patterns around us.  They are a tool in creating our own reality.

Synchronicity is the most familiar to people, and often the most derided.  (So far, I haven't seen any good rebuttals, because those have not understood his observations or theory.)  I myself see magick as an "art of synchronicity" at times.  Here's a super basic (and kinda new agey) look at synchronicity:

http://www.crystalinks.com/synchronicity.html

A more academic look:

http://www.innerexplorations.com/catchmeta/mys3.htm

The Shadow is something that haunts most, if not all, of us.  It does so collectively and individually.  It is all that we fear in ourselves.  This does not mean evil, but we often equate it with that.  It often projects outward into others, such as targetting goths for the sins of the community.  The Shadow is often called The Other.  But the deepest, and most feared, secret, is the Shadow is ourself.   The Shadow is Nature, and we are taught that Nature is evil.  It is also everything else we cannot face in ourselves, including realities we cannot face, but face them we must if we are to ever find wholeness.

http://www.cgjungpage.org/articles/shadow.html

However, inevitably life presents us with problems which can't be solved with old answers. These are the problems that demand a change in our life. We know it, but resist knowing it. We force an old solution onto a current problem, pretending that, while it might not fit perfectly, it's close enough. Of course it doesn't really. We're just applying the ostrich principle of sticking our heads in the sand, hoping the problem will go away. If, through fear or rigidity, we continue this behavior long enough, we begin to cause ourselves real suffering.

It seems too much to expect that we have to change still one time more; after all, haven't we changed so many times before? We feel unfairly treated by life. However, as Robert Green Ingalls said: "in nature there are neither rewards nor punishments--there are consequences." We aren't being singled out for punishment, we are merely experiencing the consequences of our own rigidity. If we choose security over change, we have to suffer the consequences. As Gail Sheehy summarizes succinctly: "If we don't change, we don't grow. If we don't grow, we are not really living. Growth demands a temporary surrender of security."

It is such that we will ignore evil if it means change to do otherwise.  Many of us would rather face extinction than a change in perception.  One prime example are the village elders in Golcuk, Turkey that had to face that their village was built on a fault line that would spell catastrophe if it went off, which it eventually would.  Faced with this, the elders redrew the fault line on the map because no Golcuk was better than a new Golcuk.  Eventually, this refusal to face the shadow and adapt would lead to the destruction of Golcuk and the incredible death toll.

Is Earth in the same position as Golcuk, in facing incredible disasters because people fear Change as a Death and would rather avoid it?   Most definitely yes.

For some related information on how these interact with all of us in a sometimes magickal way, see Thelema and Grey Invasion

Another one on symbols working within us:  Symbolism

How ancient symbolism can resurface in modern lit:  Harry Potter Spellbook

And Wilhelm Reich who sometimes worked with Jung:  Wilhelm Reich

We are all born whole, and let us hope, will die whole. But somewhere early on our way, we eat one of the wonderful fruits of the tree of knowledge, things separate into good and evil, and we begin the shadow-making process; we divide our lives.
----Robert A. Johnson

There's a beast in every man that should be exercised, not exorcised --Anton LeVey