Individuation although a psychological concept is not limited to that scope of thought. Individuation is a philosophical, mystical, and spiritual concept as well. Philosophically it can be defined as the freedom to rename and redefine all terms applicable to your life. In mysticism, it can be defined as integrating the human/conscious self with the soul/unconscious self into one being. Spiritually this is called Raising Kundalini. Another way to say individuation is found in Alchemy with the term the Alchemical Marriage. These are all different ways of saying the same thing. To put it simply individuation is accepting your personal power as being aligned or one with the divine power. This power is found in your heart.
Carl Jung coined the term individuation in the book Answer to Job in 1952. The book of Job is a book in the bible. Answer to Job is a commentary on it. Metaphysically Job represents the transition of man from personal and formal righteousness, a.k.a. Self-righteousness into a true inner change of heart. Which deals with the instruction from God within as opposed to the exterior acceptance as a means for satisfaction. Self-righteousness deals with the fear of evil and the self-justification that a good exterior equates to a good interior. This inner change of heart brings about fore-giveness(giving freely to your future self) and healing (purity, cleansing, and attainment). Where most fall into the trap into self-righteousness, individuation is the realization that we have to seek our personal truth within and not with external markers. Even when you have the markers to external success, internally there is a general desire for more, which is found within the process of individuation. In Answer to Job, Carl Jung has a quote that speaks to the difference between natural growth and growth from individuation. I will elaborate on what he is attempting to explain here below.
“The difference between the “natural” individuation process, which runs its course unconsciously, and the one which is consciously realized, is tremendous. In the first case consciousness nowhere intervenes; the end remains as dark as the beginning. In the second case, so much darkness comes to light that the personality is permeated with light, and consciousness necessarily gains in scope and insight. The encounter between conscious and unconscious has to ensure that the light which shines in the darkness is not only comprehended by the darkness but comprehends it.” ― C.G. Jung, Answer to Job
Conscious nowhere intervenes
It is natural for us to grow without conscious interference. We are aided or harmed by how we consciously assist this process. If we work out and eat properly we will have better physical lives. As it relates to our psychological integration we can be proactive in this endeavor and expect positive results. However, if we glorify the things we get naturally we impede our psychic development.
The end remains as dark as the beginning
When we have philosophical, mystical, and spiritual bias we do not question our motives. If we do not question our motives they remained unexamined and lead us into more darkness. Darkness or unawareness of the soul can only lead you to more darkness and more unawareness. Finding the light within is the goal and overcoming darkness allows us to commune with this light.
So much darkness comes to light that the personality is permeated with light,
When darkness rises out of our unconsciousness it does not come with pure darkness, it comes with an abundance of light or awareness. Even More So it lightens the emotional load you have been carrying for a long time and you will feel ‘lighter’ once you bring your darkness to the surface. It has to come to the surface in order to leave your being. Otherwise, we suppress and repress our light. Based on it being shrouded in darkness.
Consciousness necessarily gains in scope and insight
Insight through darkness comes clarity and instruction from the soul.
The darkness is not only comprehended by the darkness but comprehends it.
Understanding that darkness is not just something to avoid but our inner depths hold the answers to our lives. We have to understand that our darkness has to be grasped completely and internally.
Individuation presents us with an ability to receive instruction from our soul which is connected to the collective consciousness. It allows us to be present with no distractions or distortions of the soul. It awakens God in you fully and this God must redefine and rename its world as it sees fit. This power comes from worshiping your heart and not from worshiping the external. It allows you to access the formless to create the form. So worshipping the internal provides much more power than the alternative. Finally, individuation could be understood as the purpose of activities like Alchemy and Chakra Work, with this power comes a lifelong responsibility to actively integrate the soul’s instructions into our waking life. This isn’t a one-day thing that you would want to see finished but a constant daily process of healing and fore-giveness.
 Jung and his Individuation Process – http://journalpsyche.org/jung-and-his-individuation-process/
Kundalini is a Sanskrit term from ancient India that identifies the arising of an energy and consciousness which has been coiled at the base of the spine since birth and is the source of the life force (pranic energy, chi, bio-energy) that everybody knows. http://www.kundaliniguide.com/what-is-kundalini