Psalm 23 depicts the gratitude we should display from a sheep's point of view, as the animal boasts of blessings and marvels about the care of his Shepherd.
Book One of the Psalms, parallel with the spring season, focuses on the Messianic prophecies, revealing God's plan to redeem Israel by crushing Satan.
Winter is a time of cold, darkness, and sadness. As many as 10% of people in northern areas have Seasonal Affective Disorder. The Psalms for winter can help.
When it looks like things are out of control, God is busily at work behind the scenes. If we replace anxiety with faith, God will grant us divine peace.