You and I are not meant to act like preresurrection disciples, racked with fear, doubt, and timidity. We are postresurrection disciples, and if we are to live like postresurrection disciples, everything in our lives must change. The question for us is whether we are willing to make that commitment - to live and act differently and to repair the hole in our own gospel. If we are, then God will use us as parts of His amazing plan to change the world. But becoming this kind of disciple, one who is determined to be the gospel to the world around him, involves an intentional decision. It doesn't just happen...The Hole in Our Gospel by Richard Stearns, page 245.
And it's not easy... We won't really become change agents for Christ just by going to church every Sunday. We will have to make some "on purpose" life choices and then change our priorities and behavior. Only then can God transform us and use us to change the world.