The cornerstone of Jung's work lies in his recognition of the Collective Unconscious , an evolutionary concept of a reservoir of latent images, not in one's personal unconscious but from the ancestral past, as well as pre-human or animal ancestors. Not inherited, they are predispositions or potentialities for experiencing and responding to the world. The more experience one has, the greater are the chances that the latent images will become manifested. Individuation is the term Jung gave to the process of growing to one's fullest human potential. It requires work.
Dreams provide the quickest way to the individuation process.
Jung studied Alchemy and described a simple process he called Active Imagination. Although alchemy is popularly regarded as the science that sought to transmute base physical matter, many of the medieval alchemists were more interested in developing a discipline that would lead to the psychological and spiritual transformation of the individual. C. G. Jung discovered in his study of alchemical texts a symbolic and imaginal language that expressed many of his own insights into psychological processes.