Self-esteem has been defined as the "totality of the individual's thoughts and feelings having reference to himself as an object." Self-concept has been defined as the descriptive and evaluative beliefs that a person holds about multidimensional characteristics of the self. As children progress through primary school, general self-concept declines. The aim of this study was to investigate the impact of Cognitive Behavioral Therapy (CBT) and Rational Emotive Therapy (RET) self-enhancement programs on childrens' self-talk, self-esteem, and irrational beliefs. Students with a mean age of 9.8 years from two classes (N=100) participated. They represented two schools that served similar socioeconomic status students in a metropolitan area. One school implemented the CBT program while the other school used the RET program. Results indicated that CBT led to a decrease in negative self-talk whereas RET did not affect this variable; results also indicated that RET led to a decrease in the dependence irrational belief whereas CBT did not influence these scores over time. It was also suggested that children changed over time irrespective of which program they received. Nonetheless, both intervention programs led to an increase in positive self-talk and an increase in positive rational beliefs in the conformity and discomfort intolerance areas. (LSR)