Anxiety is a human mind bug. This may seem a strange claim, but I cannot find a better explanation for anxiety disorders. In fact, we can see pathological anxiety as the undesired consequence of our ability to think about the future. Being scared about a life-threatening event in the near future is a valuable ability: it helps us to survive, avoid danger and, in short, make our species survive. That is one of the reason our species has been so successful in nature\[1\].