In Jeffrey Eugenides' "The Marriage Plot," the character Leonard expresses his deep struggles with mental illness. He attempts to reassure someone close to him that they are not ruining his life, yet he acknowledges that the medications he takes only dull his experience. Leonard grapples with the realization that his condition is ultimately insurmountable, making him feel trapped by his own mind.

The weight of his situation is evident as he articulates a desire to find a way to "turn off" the turmoil inside his head. This poignant moment highlights his awareness of the grim reality he faces and his acceptance of the fact that recovery is not possible for him. Leonard's honesty brings forth the themes of despair and the search for solace in the midst of unchangeable circumstances.