According to Mark chapter 4 we need to understand the condition of our hearts. There are things in this world that if we choose them we become unfruitful. We need to know that we are not our own. We have been bought with a price and therefore should not live to please ourselves but the Lord Jesus. Only by knowing God's love for us can we not love the world and the things in it. Walking in God's love and the Fear of the Lord will cause us to stay fruitful.