In both Being and Nothingness and the Notebooks for an Ethics we are told how one needs the Ego to get along in the everyday world, but yet at the same time that it is a psychic phenomenon that easily distorts everyday experience. In this paper, it is shown how, for Sartre, friends can play an important role by helping each other overcome the vested interest in maintaining the experience of a false, set identity that is engendered by the Ego. In addition, reference to the Notebooks will make it clear that support per se is insufficient to enable one to transcend the constraints of an entrenched Ego, and that instead this form of aid must be taken in conjunction with challenge, or a type of positive conflict, if one is going to be able effectively to help a friend for the task in question.