Can't say I have... but that is probably because I am that person you are describing. I have always been down, I'm convinced that I was born depressed. I have never met anyone more depressed than me. I don't want to bring other people down so I keep it to myself and pretend that I'm alive and am a person. But to me, I'm as good as dead, I am powerless, defeated. Nothing will ever make me happy, I have never felt this thing known as happiness by other people. I hate everything, and I cannot change anything. Don't listen to me.