Well, I have but one thing to brag about, and that is the cross of Jesus Christ. In and of myself, I have only ever accomplished evil, and in Christ alone have I ever accomplished anything good - and even then I cannot attribute it to myself. While in my sin, he drew me, opened my eyes, and gave me a new life to live to and for him alone. To live is Christ, and to die is Christ. Christ is my very purpose for being, and in him alone is fullness and happiness both in this life and the life to come.
Having said all that, I have to stand with John Piper in saying that my life is forfeit for one thing - "to spread a passion for the Supremacy of God in all things for the joy of all peoples."