Some people say that in stressful situations I can seem unflappable, and I think that's partly because I'm always kind of internally flapped. And so ... when there's actually something real to be concerned about, it's actually less anxiety-provoking than these irrational things. It's also fairly typical ... of certain kinds of anxiety disorder sufferers, particularly people with panic disorder, [they] are exceptionally good at hiding it. They're able to convey an impression of competence, calmness and confidence, which is maybe substantially real ... but there's an internal fear. ... The gap between that and this façade where people see you as competent and effective — you're always afraid of being exposed, which is in itself anxiety producing.
- Scott Stossel