Living happily is one of the important wishes of people. Happiness in psychology is addressed by the concept of subjective well-being. Subjective well-being means an individual’s judgment by evaluating his/her life and includes positive effect, negative effect and life satisfaction dimensions. In the studies, related variables with high-level subjective well-being are shown in a wide range, from coping with stress to being a better citizen. The purpose of this study is to test the effectiveness of the subjective well-being training program on adults. A total of 32 volunteers participated in the study. Subjective Well-Being Scale was used as the data collection tool and to test the effectiveness of the training program. Experimental and control groups were randomly assigned. It was found that there is no difference between the two groups with respect to the pre-test scores. The experimental group participated in a 6-week training program, which lasted for 180 minutes, on the basis of creative drama practices and a rational emotional behavioral approach. After the last session, the post-test data were collected from the experimental and control group. Mann Whitney U and Wilcoxon signed rank analysis tests were used in the analyses. The results showed that the posttest scores of the experimental group were higher than the pre-test scores, but no difference in the control group. Experimental and control group posttest scores differed in favor of the experimental group. The results have demonstrated the effectiveness of the subjective well-being training program to increase the subjective well-being of adults.