Have you noticed that when you are depersonalized/derealized you are hyper aware of your mistakes as opposed to when you feel normal? For example, some days when I feel normal again I am focused on things I shouldn't waste my time on like ocd, germophobia and such bad habits, I go with the flow and do not bother so much about the way I behave with the people in my life. I act like I don't know how I felt and how desperate I was. But, when there is this panic due to dpdr, I reconsider my behavior, feel guilty about the way I thought, behaved, talked etc..