Pursuit of holiness

Just finished Thomas a Kempis, onto Jerry Bridges now. here's the first quote:

Our first problem is that our attitude to sin is more self-centred than God-centred. We are more concerned about our own "victory" over sin than we are about the fact that our sins grieve the heart of God. We cannot tolerate failure in our struggle with sin chiefly because we are success oriented, not because we know it is offensive to God.
(16-17)