I know how depression feels like, as I was depressed too. I would keep it secret so no one knew, and it was horrible. But something big happened, and it was Jesus. Jesus found me in that darkness, and gave me joy like a river; it just keeps on flowing. Jesus wants to give you joy to, all you have to do is to to turn to Him. The only one in this world that deserves to be depressed is that devil, satan. And what He wants to do is make people like him; angry, bitter, selfish, prideful, and depressed.
Jesus says, "Come unto me, all ye that labor and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls." God wants to give you rest, you just need to accept Him. He wants to be your friend.
Jesus loves you and is very serious about you!