This study was conducted to study the effect of positive thinking training on happiness and irrational beliefs of blind adolescents. The sample consisted of 30 subjects (in experimental group, n=15 and control group, n=15), that were selected using available sampling. All subjects were asked to answer the Oxford Happiness Inventory and Jones Irrational Beliefs questionnaire as the pretest and post tests. The experimental group received eight session of positive thinking training. The control group did not receive training. The results of analysis of covariance showed that training had a significant effect on all the subscales of happiness and irrational beliefs (The necessity of others approval and support, high self-expectations, tend to self-blame, reaction to failure, affective irresponsibility, too much concern associated with anxiety, avoidance of problems, dependency, frustration toward change, perfectionism). It was concluded that the positive thinking skills training can be used as an efficient way to increase positive thinking, happiness and decrease irrational beliefs in blind students.