Long-term practice of FIML generates deep change in the human psyche. Social relations, habitual traits and attitudes, as well as ingrained emotional responses may all be subject to profound transformation.
The reason this happens is the basic FIML technique provides consistently good counter-evidence to habitual mental and emotional reactions. In addition, the technique itself teaches the practitioner’s mind–or shows it by example–to apply similar kinds of reasoning to many other situations that are not open to FIML dialog.
American Buddhist Net 