Psalm 3 - Some have described this as a "Morning Psalm" as David speaks of awakening to find the Lord has continued to sustain him. The inscription over this Psalm speaks of the time when David had to flee from his own son, Absalom. This reminds us that our greatest and unfailing Friend, is God Himself.
Psalm 4 - This Psalm has been called an "Evening Psalm" because David spoke of being able to lie down in peace and go to sleep. With God by your side and in your life there really is no need for anxiety. Note how the Lord treats His own children in verse 3.
Psalm 12 - The contrast in this Psalm is between the speech of those who just flatter others and the pure and faithful word of God. Its always best to listen to what God has to say about you instead of relying on the insincere words of others.
Psalm 13 - This Psalm starts off with a cry of despair over the Lord's delay in helping the writer, but it ends with song because the answers God gives to his prayers were worth waiting for!
Psalm 28 - The psalmist starts his prayer asking God not only to listen but also answer his prayer. There are times when God is silent and one may wonder if He cares. But God shows His strength and gives His help to those who trust and wait for Him.
Psalm 55 - When you have a friend who fails you, turn to this Psalm. Some of the most painful hurts come from those we thought would always be faithful. But God can always be relied upon. Note in verse 22 the similarity to 1 Peter 5:7. Compare the two passages.