Psalms 42 and 43 seem to be written by the same writer: The sons of Korah. Both psalms maintain the same category: “spiritual depression”. Why spiritual depression? Well, they were far from the house of God and did not have a temple where to worship God and therefore they felt distressed, for being far from the house of God. Have you felt afflicted for being away from the house of God?
The sons of Korah wrote:
Why art thou cast down, O my soul? and why art thou disquieted within me? hope in God: for I shall yet praise him, who is the health of my countenance, and my God.