In order to be free from depression it is necessary to find the root to the problem. It can be many things that cause us feeling bad.
One reason could be fear. In fact, some psychologist said that all problems have its root in fear – the fear of death, actually. I do not know if that is the case, but what I know is that fear causes more problem than we might think.
It is understandable that we feel fearful when we have had experiences that made us feel that way. Maybe you have been threatened in some way, or been really scared for something etc. People that have had break in their house can be much filled with fear. There are thousands of reasons for fear. Even if you are a Christian depression can hit you after traumatic situations.
But according to the Bible there is only one main solution for it:
There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love. (1 Jn 4:18 KJV)
Yes, that is true; the love of God is the solution of fear! You see, if you and I could really understand, and I mean understand with our heart as a revelation Gods great love for us, there would really not be any reason for us to be depressed because of fear! Gods love would instantly make us free from depression! The problem we have is that it is hard for us to understand Gods love. We have a hard time trust it. Our mind is filled with thoughts of destruction and failure everything else, that that hinders our Gods love to come through.
How can we increase our experience of Gods love then? By staying in the word of God! Reading the word that tells us that God loves us, will never leave us and want to protect us. When that truth becomes stronger in your heart than all fearful thoughts we have, we are free from depression.
I certainly have experiences how the word of God instantly changed me. I suffered from severe depressive thinking many years ago, doubting that I was even saved, believing that God maybe loved others but not me. But one moment of revelation and I got free from those thoughts once and for all! That show how strong the word of God is!