Psalms with an emotional theme are often prayer psalms, where the psalmist is talking to God about human beings, usually himself. They teach us that when we bring our feelings of anxiety, fear, anger, discouragement, despair, or anything else to God, He helps us through those feelings and leads us into gratitude and worship. When we are experiencing emotional distress, we can always turn to Psalms and find rest, trust, and peace to overcome our stress.