image from here
The goal of the living of the Orthodox ascetical spiritual life is the revealing of the secrets I keep from myself, knowingly or unknowingly, which hinder me from my prize: union with Christ. In other words, my secrets are those things I place above Christ, holding onto them rather than obtaining Him.
For example, lust, that which primarily ties Man to the Fallen Creation(1 John 2:15-17), has roots so deep in me that I often seek ways to place myself in situations where I can justify a "fall" into sin.
Christ came to reveal and undo the works of the Devil. I, in union with Him, cooperating freely through my will, have as my goal if I follow Christ to choose to want to have revealed to me those "secret workings" within myself and once revealed to put my back to the task of eliminating them, by God's grace.
Their power is undone when I freely offer them to God, no longer tied to them. However, as the passion(s) have taken a long time to take root and entrench themselves, they seem to be rarely, if ever, removed only offering them up once and for all. Usually, a prolonged struggle over a long course of our lives is involved to lessen their(the passions) power and to work towards their complete removal through perfect union with Christ, the God Man.
This, it must be said, is not impossible. The lives of many Saints show this possibility to us and it must be remembered that the Saints are like us and not initially "set apart" for the task of becoming divinized. They chose to have themselves joined to Christ and their example is for us as well.