"My observation of Christendom is that most of us tend to base our relationship with God on our performance instead of on His grace. If we’ve performed well–whatever “well” is on our opinion–then we expect God to bless us. If we haven’t done so well, our expectations are reduced accordingly. In this sense, we live by works rather than by grace. We are saved by grace, but we are living by the “sweat” of our own performance.Jerry Bridges, Transforming Grace, quoted by Tullian Tchividjian at On Earth as it is in Heaven » Blog Archive » Are You Living By The Sweat Of Your Own Performance?
Moreover, we are always challenging ourselves and one another to “try harder.” We seem to believe success in the Christian life (however we define success) is basically up to us: our commitment, our discipline, and our zeal, with some help from God along the way. We give lip service to the attitude of the Apostle Paul, “But by the grace of God I am what I am” (1 Corinthians 15:10), but our unspoken motto is, “God helps those who help themselves.” The realization that my daily relationship with God is based on the infinite merit of Christ instead of my own performance is a very freeing and joyous experience."