Empty

There are times when I feel.. emotionless, completely numb to my own movements and utterly lost in my own thoughts. When this happens, I start to question everything. I drift into a state of confusion where everything feels dull and far away. I have no idea why this happens, I just know it isnt a hallucination or a figment of my imagination, but when this happens I feel.. fake. Like everything I do is pointless and I feel tired. It just makes me want to stop. This feeling is terrifying, because I don't know if anyone else feels this...