It is not the putative belief in your identity with the body that is the problem, but rather what you believe to be the modality of this belief, taking it for a member of a propositional universe, for example, or as a sort of optional assumption that has seized you like an idée fixe, but which is still able to be speculatively negated. Perhaps only the chronically ill, or those undergoing torture, have any understanding of what it is to be a body; even to live an entirely physical life in more or less good health is only to master or to enslave the body for the sake of the mind and its endless caprices. If once you could fully inhabit the pragmatic reality of this belief you might begin to be freed from your inveterate error. Pointers towards the life of the body: animals, illness, sex, the passion of Christ.