This study was designed to identify the mediated effects of life position in relation to career barrier and career decision making self-efficacy among young job seekers. To that end, a total of 295 male and female students, 147 male students and 148 female students aged 20 to 29, conducted a survey on career barrier, career decision making self-efficacy and life position. The data analysis was analyzed using the SPS 24.0, Sobel test, and the conformity of the model and the relationship between the variables were verified. The main results are as follows: First, there significant correlations between sub-variables of career barrier, career decision making self-efficacy, and life position. Second, the positive life position(I+U+) in relation to the career barrier and the career decision making self-efficacy has been shown to have partial matching effect. Third, the negative life position(I-U-) in relation to the career barrier and the career decision making self-efficacy has been shown to have partial matching effect. Based on these results, Based on these results, career counseling, career guidance and parent education were discussed in order to maintain a positive life position(I+U+) of job seekers.