Jesus said to seek first the kingdom of God in His Sermon on the Mount (Matthew 6:33). The verse's meaning is as direct as it sounds. We are to seek the things of God as a priority over the things of the world. Primarily, it means we are to seek the salvation that is inherent in the kingdom of God because it is of greater value than all the world's riches. Does this mean that we should neglect the reasonable and daily duties that help sustain our lives? Certainly not. But for the Christian, there should be a difference in attitude toward them. If we are taking care of God's business as a priority-seeking His salvation, living in obedience to Him, and sharing the good news of the kingdom with others-then He will take care of our business as He promised-and if that's the arrangement, where is worrying? http://www.gotquestions.org/seek-first-kingdom-God.html
I believe to seek first the kingdom of God, you will have to get saved. Seeking the kingdom of God is of greater value than all the riches of the world. After seeking God's Kingdom, you will have to live in obedience and honesty.