God's call to his children comes on two levels. First we receive the call to become, then we hear the call to do. Isaiah's experience illustrates this two-level call. First God called him to become sinless. Only then did He call Isaiah to do something (Isaiah 6:1-9)
Jesus talked about this "becoming process" in John 15:1-5. Our identification with him should be so constant and intimate that we become exactly like him. Jesus told Phillip, "If you have seen me you have seen the Father." (John 14:9) When we have each become all the Father intends us to be, we will be able to say, "If you have seen me, you have seen Jesus."
After we have clearly understood and started answering the "become" call, God issues the "do" call. Correctly answering the "do" call is the goal of the WHAT WOULD JESUS DO? movement. It is very wise to consider this question before making decisions. Each of our actions and reactions should be identical to what Jesus would have done in a similar situation. If we always follow his model, we will impact our world for him.
However, if we try to answer the call to do without first answering the call to become, we are in danger of being like the Pharisees of Jesus' time. They were trying to do all their religion required without first becoming what Jesus was (Matthew 13:13-15). Maybe we need to start a WHAT DID JESUS BECOME? movement.
We must answer God's call to become by spending time alone with him in prayer and Bible study. "I want to be like Jesus" must become the primary goal in our lives. Then, in his own time, God will issue each of us a call to action.