Much of depression is fed, fueled, and maintained by excessive negative thinking: “I don’t think I can do this. I don’t think this is going to work.”
If you struggle with negative thoughts, you need to challenge then. Thought distortions and negative thoughts keep depression going and make it worse.
If you ask Christians, they’ll quote: 2 Cor 10:4,5 “We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.”
Here is a practical exercise that can be helpful: … when negative thought enters your mind, picture yourself capturing the negative thought in your hands and demolish it before you even have a chance to think about it. After you demolish it, picture yourself handing it quickly over to God. Then replace the negative thought with a positive one. Repeat exercise as often as necessary. Make it a habit to catch negative thoughts, cognitive errors, bad thoughts, negative thoughts.
Another Christian verse is Philippians 4:8 (msg):
“…you’ll do best by filling your minds and meditating on things TRUE, NOBLE, REPUTABLE, AUTHENTIC, COMPELLING, GRACIOUS — the BEST, not the worst; the BEAUTIFUL, not the ugly; THINGS TO PRAISE, not things to curse.”