The patient's containment of the analyst's affect occurs in a broad range of situations that extend far beyond the more visible instances when the analyst is directly expressive of his or her own affects. This paper begins to explore how patients help analysts contain various kinds of affects within the analytic process, particularly more routine and less heroic types of containment. Although this containment is generally a far less prominent feature of analytic work than is the containment provided by the analyst for the patient, it is omnipresent. Routine elements of containment that the patient provides for the analyst involve working with the knowledge of the limits of the other—including the possibility that in a long-term treatment the patient will often get to know quite well some of the quotidian aspects of the analyst's personality and its relation to the patient's conflicts. Mutual aspects of containment are extremely important in the expression and titration of anger and disappointment, desire, hope, humor, and the negotiation of psychic possibility within the analytic dyad.