The purpose of this study was to determine whether a training program in full consciousness (mindfulness) generated effects on perceived self-esteem and emotional intelligence (EI), in teachers from various levels of education (nursery, primary and secondary). The experimental group was formed by 32 subjects and the control group by 33. Self-esteem was assessed with the Rosenberg Self-Esteem Scale and the Trait Meta-Mood Scale-24. The intervention was performed in ten weekly sessions, of ninety minutes each. It also included take-home exercises, with the purpose of facilitating the implementation of the training. Results show significant differences between control and experimental groups in the considered variables, although effects of the training program were not homogeneous in all subjects in the experimental group. These differences were due to the level of education to which teachers belonged. It is suggested the utility that such intervention programs could have on improving self-esteem and on the modification of skills related to EI.