I really appreciated this devotion from Portals of Prayer - November 29:
Depression has been called the "silent killer," because those who suffer this devastating illness often do so with little or no visible symptoms. Intense internal torment is tearing them apart, but they hide it well. Overwhelmed by hopelessness and helplessness, some see suicide as the only way to relive the emotional anguish.
Jesus' promise shines a bright light into the darkness of depression. The Good Shepherd lays down His life for all. By His suffering on the cross, He shows the depressed person and all of us that we are worth every second of pain. He willingly suffered.
If you are deep in the pit of despair, call on Jesus to lift you up and surround you with His love. His victory over death is His promise that one day, the disease of depression will be destroyed in the resurrection of all flesh and it will never again harm you. You have been redeemed not with silver or gold but with the holy, precious blood of Jesus, who loves you so much. In Him, you have abundant life now and eternally in heaven.
"Lord, be our light when worldly darkness veils us...And in our day when hell itself assails us, Grant us Your peace." (LSB 659:3). Amen.