There are many who say, “Who will show us some good? Lift up the light of your face upon us, O LORD!”  You have put more joy in my heart than they have when their grain and wine abound. (ESV)
It seems as if King David lived in our time! There are still many who say, "Who will show us some good?" Those who do not know the goodness of God take a mocking tone as they cry out demanding some good to be shown to them. In fact, the average skeptic is quick to point out all of the things that they blame God for (human suffering, sickness, death, poverty, etc.) while giving him no glory for the many ways he has already shown them his goodness.
Before we understand how we are to be shown some good, let us first define what is good. Goodness can only be defined as coming from God. The problem that many of us make is that we claim things are not good, but our definition of goodness is not correct. We think if we have the things we selfishly desire then we would be recipients of that which is good. But God, who is the source of goodness, knows what is good for us, and offers that instead. Our definition of goodness must come from God.
 Every good gift and every perfect gift is from above, coming down from the Father of lights, with whom there is no variation or shadow due to change. (ESV)
Good comes from God. And he determines what is truly good. The skeptic mocks and makes demands. Listen to David's words in Psalm 4:7, "You have put more joy in my heart than they have when their grain and wine abound." He is saying that in God is true joy. Greater joy than wine and food can provide. David knew the goodness of God. That set him free to worship God, instead of making demands of him.
Do you believe in God's goodness? Or are you seeking to have your selfish desires met. Only when you seek for fulfillment in God will you experience all of his satisfying goodness.