Disputation, D in the A-B-C-D formula for change, is REBT’s most unique intervention and usually the primary goal of each REBT session. Rational emotive disputation is a special form of cognitive restructuring consisting of challenging clients’ absolutistic, irrational, evaluative beliefs, and replacing them with more moderate and rational evaluative beliefs. REBT is most successful when clients dispute their own irrational beliefs, especially when they can formulate their own rational alternative beliefs and rational philosophies for living.