Many people are living by their own will, not by the Life of God.
They are Christian because they have decided to be such.
They have made a decision of the will.
They want sanctification and are determined to have it.
They have resolved to experience victory in their lives.
Good as all these may appear, these people nonetheless are living by their wills.
Their life is all within the circle of their own wills.
Similarly, much Christian work is done also only in this realm.