We can please God through believing what he calls us to believe. Jesus called people to believe in him. Not just his teaching, but the miracles he performed were to call people to believe in him. This faith isn’t just in our head, not just an agreement that Jesus is the son of God, our savior. This is a faith that changes how we see our world, our selves. It is a faith that changes how we live our lives. This is a faith that pleases God.
Living to please God is a lot like a getting married. When we decide to get married it shouldn’t be because of what we will get from the relationship, though we will certainly get much in many ways. As I go into a marriage my goal should be what I can bring to and do for the person I love. That is the point of the marriage section of Ephesians 5. Wives submit and husbands love, not so the other person can make me happy, but so that I can make them happy, which in turn brings me happiness.
So, if you want to hear God laugh, give him your life.