What Does It Mean to Search First the Kingdom of God?

We live in the attention economy. What you think about will come to take over your heart and either entrap it in greed or set it free in love. To seek first the kingdom of god? It means to invest the resources of our life into god and what he is do in the world. Frank lauback, in his book, letters by a modern mystic, which is another one of my favorite devotional reads.