Why does it feel like "I can't do this" has so much more power and it's a relief to say it than the "I can do this"? It's weird how it feels like a war against myself to say I can, but when I surrender and say, "I can't" it feels so much better. Is there some kind of reward mechanism in my brain that makes me feel right to give up and fail because I want to be right? It seems horribly backwards in common thought to anyone else.