God says you are His child and you are more than a conqueror. He says you are an ambassador for Christ and you are to fight the evil around you. He also says you can do all things thru Christ and that all things are possible to those who believe. So trust God and use His might to strengthen yourself and be transformed by renewing your mind with the Word of God. Put on the full Armor of God and pray a hedge of protection around yourself. The best thing you can do is get up and go do something fun or find some way to help others.
Depression is a spiritual attack on the mind. It occurs when you feel a lack of hope Satan will use this as an opportunity to attack your mind. He tries to discourage you by telling you about all of your failures, sins, wrong choices and bad relationships you have had.
If you are feeling anxious or fearful those feelings are coming from your flesh. Your spirit produces love, joy, peace, patience and a sound mind. God says to be led by your spirit and crucify your flesh. Your spirit has unlimited power through Christ and has the ability to solve all of your fears and problems. Below is what God says about fear and anxiety. Philippians 4:6-7 6 Be anxious for nothing but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; 7 and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus