Depression is the part of your life where all the illusions you had about existence come crashing down, all the fairy tales that kept you warm throughout your childhood, all those get shaken hard when you are depressed; and if you don't shake them off of you, you'll fall into madness, you will lose all contact with actual existence, and that is followed swiftly by the descent into depravity.

Depending on how strong you are, and how strong the friendships in your life are, you get over your depression faster or slower, or you never get over it at all. Some people get broken by depression, never recover from it, they only keep on living by drowning themselves in drugs, the cowards call these medication; some people emerge better, wiser, having achieved a distilled undestranding of existence, they see the world in a way that is much closer to the truth than at any previous time in their lives.