Depression is that cross which most people bear, at some point in life, sometimes most of their lives. It is a terrible sorrow that makes everything seem pointless, futile, obnoxious, and dark. But the solution to depression is exaltation in God’s Mercy.
Think of His Mercy and exalt in it. He has given you many good things, from a home to family to body and soul to atoms to food to clothing to day and night to eternal life to resurrection to the Holy Mysteries. All this good He has given you out of love and mercy. When He was thinking of you, He was thinking of saving you and of sanctifying you. While He was creating the wheat that would become your bread, He was thinking of you. While He was instituting Confession, He was thinking of all the graces He would give you and all the sins that would be consumed in His Love and Mercy like twigs thrown into a furnance. When He rose from the dead, He was thinking of you on the last day with your risen body joined to your soul. Though no one is worthy of any good things, God has given us every good things, out of love and mercy. So rejoice in His Mercy and exalt it. This is true joy!
God is Mercy and Love Itself. Exalt in Him for what He is!