The gospel of Christ is all about the the finished work of Jesus on the cross and it is the power of God unto salvation to all those who believe. It is the preaching of the cross that gives power to the gospel. " For the preaching of the cross is to them that perished foolishness; but unto us which are saved it is the power of God." 1 Corinthians 1:18
We need to boast more on the obedience of Christ rather than our own obedience to God. God blesses us because of Christ's obedience to the Father at the cross. Our obedience to God however, is our way of appreciating the obedience of Jesus Christ. Our obedience to God is important and has its proper place. Through our obedience to God, we become a blessing to others and also through obedience we are able to work out our own salvation.