The dream is a little hidden door in the innermost and most secret recesses of the psyche, opening into that cosmic night which was psyche long before there was any ego-consciousness, and which will remain psyche no matter how far our ego-consciousness may extend.
We can distinguish two types of dreams: the personal and the archetypal. We could also mention a third dream, the prophetic. In this last group, we may place some of Jung’s dreams when he forecasted the blood baths waiting for Europe before the First World War. But we will not deal here with these somewhat unusual prophetic dreams.
A dream may be personal, having to do exclusively with the personal life of the dreamer, or archetypal, giving rise to an interpretation that transcends the personal sphere.
Dream interpretation in Jungian Psychology is a complex affair, especially when we are dealing with an archetypal one. Jung proposes that we amplify the dream looking for parallels in the world of myths and fairy-tales. A good Jungian analyst should have an extensive culture, being conversant with myths of the world, fairy-tales, religion, alchemy, and literature.
As for the personal dreams, we have two options: treating them as giving an external message or an internal one. If you have a known person as a character in your dream, the dream may refer to this person – external interpretation – or to the characteristics you have that this specific person may reflect – internal interpretation.
Dream interpretation is not an easy task. Jung himself and many Jungians have written books and books on this subject.