Psalm 143:3-10 give a description of depression and how to overcome it.
3 For the enemy has pursued and persecuted my soul, he has crushed my life down to the ground; he has made me to dwell in dark places as those who have been long dead.
4 Therefore is my spirit overwhelmed and faints within me [wrapped in gloom]; my heart within my bosom grows numb.
5 I remember the days of old; I meditate on all Your doings; I ponder the work of Your hands.
6 I spread forth my hands to You; my soul thirsts after You like a thirsty land [for water]. Selah [pause, and calmly think of that]!
7 Answer me speedily, O Lord, for my spirit fails; hide not Your face from me, lest I become like those who go down into the pit (the grave).
8 Cause me to hear Your loving-kindness in the morning, for on You do I lean and in You do I trust. Cause me to know the way wherein I should walk, for I lift up my inner self to You.
9 Deliver me, O Lord, from my enemies; I flee to You to hide me.
10 Teach me to do Your will, for You are my God; let Your good Spirit lead me into a level country and into the land of uprightness.
H/T: Bible Gateway