Without it there is no possibility for genuine self-realization. It is the beginning of the creative process of individuation, of the soul traveling inward and achieving integration or true unity of being. It is the golden dawn of the soul, the blossoming of the inner lotus of the spirit. To put it in other words, Thelemic initiation is the realization of the True Will, which makes for the greater attainment of the Knowledge and Conversation of the Holy Guardian Angel. Thelemic initiation is the awakening of the development of efficiency with regard to the active execution and fulfillment of one's True Will.
Efficiency is, in a nutshell, the power to produce effects.
It is, ergo, the proper application of the Will, and the power to make changes in conformity with the Will. Thelemic Initiation is the scientific exploration and realization of the nature and powers of your own Being. It is the purification of all that is an hindrance to your progress, and it makes for the free development and consecration of all those parts of yourself which are an essential element in the constitution of your True Will, that you may attain the Great Work of the New Aeon of Horus. Thelemic initiation is a very serious matter, involving the awakening of the highest in you. Those who take a Thelemic initiation without understanding the actual powers that are awakened in the process are unaware of what they do and, more often than not, they will fail the initiation, being unable to comprehend the serious quality of its formula.