I have had times in my life when I have been very depressed. At those times I want to keep to myself and sleep. However I have found it is very important to be with other people. When you are depressed you have a warped sense of the world, you need other people to bring you back to a more optimistic view. However much about life is not optimistic. There are all sorts of terrible things going on. Life without Jesus is genuinely depressing in the long term, although you may be living a life which seems full of fun to you. I have often wondered which is the right view of life, the one when I am depressed or the one when I am elated. It is good to seek for the truth.