In some sense all desire is mimetic desire, that is, not a desire for something but a desire to be something. Therefore it is born of the craving for identity. That is one version of knowing who you are, but it is defined entirely within social, or worldly parameters. This is not easily let go of, perhaps you cannot let go of it since what you are is the holding on to it, but it can sometimes let you go. That is the moment of grace, because without it everything is renewed in unsuspected ways.