Here are 5 stages I have been contemplating as a way of explaining the spiritual life in Christian terms. Often, these steps are not clearly demarcated, and the terms exist in a confused way to people. So, it is useful to explain them.
1. The fallen state
This is the state of men in ordinary life. Here, we can understand it in the language of Genesis. In our ordinary consciousness, we are confused, dysfunctional people. We are miserable but unaware of our misery. We live for fleeting ends and are unaware that everything we do is not meaningful.
2. Metanoia
This is the Greek word which means "to think over." This period involves the conscious exercise of the will to think over one's past experiences and oneself. When one does this it produces a dramatic transformation of self. This transformation involves what is called the descent into the underworld, or catabasis: a "going down" into the depths of oneself.
3. The state of illumination
This is the stage of proficiency in the spiritual life. With it comes genuine joy, a sense of purpose and value, and genuine affection for others. It is a life lived in accord with the world. Many poets and mystics attain this state and don't proceed further.
4. The dark night of the soul
This stage so excellently explained by St. John of the Cross lies between illumination and theosis. As John of the Cross states, very few people pass through this. In the dark night of the soul, a man experiences absolute impoverishment, misery and negation, for an end that he will not anticipate: perfection.
5. Theosis
The final stage of the spiritual life is that of divinization. Here, a man has imitated Christ fully, and develops two natures, human and divine. It is the state of supreme happiness for human beings.