This study compares the effectiveness of two kinds of self-management training. One is based on descriptions of a popular kind of business self-management training (n = 53), the other on a self-management approach that is frequently used within clinical psychology (n = 53). The latter should be more effective because it focuses on small, individualized steps and not, as the former does, on life-time goals. The dependent variables of self-management practices, self-efficacy, and life satisfaction were measured before and after the training, as well as after three months. Other variables (e.g., training reactions) were measured after the training and/or after three months. The results show that only the training based on the clinical psychology self-management approach was effective. It is argued that findings from clinical psychology can also be used for training in work settings, and training concepts that are not evaluated should be viewed skeptically.