The cross is the center, the core of the Kingdom of God. Every member of the Kingdom of God is to view the creation from the cross. The saint does not seek his own will but the will of God. The cross insures that the will of God is done in the Kingdom of God.
Being crucified with Christ purifies the believer of self-will. The cross of the saint destroys self-will, personal ambition, fleshly enthusiasm, self-centeredness, self-love from his personality.
Living a crucified life means there always is a point of pain in our consciousness. We never can completely relax, settle back and be at ease in Zion.