People not only act in order to change something, they can also act in order to prevent something from happening, so that nothing will change. Therein resides the typical strategy of the obsessional neurotic: he is frantically active in order to prevent the real thing from happening. Say, in a group situation in which some tension threatens to explode, the obsessional talks all the time in order to prevent the awkward moment of silence which would compel the participants to openly confront the underlying tension. In psychoanalytic treatment, obsessional neurotics talk constantly, overflowing the analyst with anecdotes, dreams, insights: their incessant activity is sustained by the underlying fear that, if they stop talking for a moment, the analyst will ask them the question that truly matters – in other words, they talk in order to keep the analyst immobile.
Žižek, Slavoj. “The Interpassive Subject: Lacan Turns a Prayer Wheel“