Address the cause of depression. Get at the root–guilt and shame, loss of a job, family conflicts, unforgiveness, etc.) and work in therapy.
The next time you begin to feel depressed, pray….
“I am redeemed by the blood of Jesus. I am not under the curse. He came to redeem me. I am the head, not the tail. I am above, not below, no weapon formed against me will prosper. Let the redeemed of the Lord, say so!”