In the twentieth sutta of Majjhima-Nikaya, Gautama recommends students who are haunted by a bad idea of undesirable character to try five methods for expelling it: (1) attend to an opposing good idea; (2) face the danger of the consequences of letting the bad idea emerge in action; (3) become inattentive to the bad idea; (4) analyse its antecedents and so paralyze the sequent impulse; (5) coerce the mind with the aid of bodily tension.

-- Notebooks Category 6: Emotions and Ethics > Chapter 1: Uplift Character > # 76