Gregor's emotional state matches his deteriorating physical state. The metamorphosis, which should have aided a psychological transformation, has still left him trapped in the grip of the same emotions that had held him in check during his whole previous life. We can see this in the pains Gregor takes to help his family deal with the "inconvenience he was bound to cause them in his present condition." Gregor's need to escape his previous life is something that he could never justify to himself, and he retains his disregard for his own well being for the sake of others. He says he would rather starve to death than show his sister that he is hungry, suppressing his impulse to beg her for food in order to avoid inconveniencing her. Gregor has to watch his movements carefully. If he drops his head, this bothers his family, and so he tries to put his head down carefully. He tries to do everything possible not to bother them. Even though he has been freed from his economic imprisonment, he has become a prisoner in a different way. Literally, he has been locked in, and he off-handedly mentions "his imprisonment." But psychologically he also remains a slave, since he must monitor every move out of concern for his family.