The ability to make productive choices and to discipline oneself into achieving one's goals comes down to focus and concentration. Like a muscle, concentration can be strengthened by regular exercice and using optimization techniques to increase one's will and capacity to act. This series of exercices will provide you with the necessary tools for optimizing your concentration; they will be useful at work, but also in everyday life, from clearer thoughts to more assertive behavior. You will improve your visualization skills, learn the most efficient exercices in concentration, and become mindful of your thoughts and body. The last exercice is specifically designed to boost your concentration while decreasing stress caused by work commitments.