Acknowledging God's Goodness

From James Boice in his sermon on Psalm 9:

Let me tell you about one thing I have started to do as a result of my study of the psalms. Recognizing that they are open in their praise of God (as well as emotive in their articulation of pain or grief), I decided to make a point every day of acknowledging God’s goodness in some area to some person. That does not seem like much. But when I began to think along these lines I realized how much time frequently went by without my having praised God for anything. And I discovered something else. Once I had begun to make a point of acknowledging God’s goodness, I began to think of his goodness more often, and I actually developed a more positive and spiritual frame of mind.