Lennie's Guilt in Of Mice and Men Lennie Small, the strong but dull-witted farm hand, experienced a psychotic break-down near the end of Of Mice and Men, by John Steinbeck. This episode was brought on by a tremendous feeling of guilt. While Lennie's head was full of the thoughts of the death of Curley's wife, his burden upon George, and his mental relationship with his aunt Clara and the giant rabbit, a somewhat confusing portrayal of Lennie's true guilt was shown. Lennie feels guilty about the death of Curley's wife. He accidentally broke h ....