need self-discipline in taking possession of your mind, which is the one thing nature intended that you should do. Make it a habit. Make it a series of habits. Take possession of your own mind, and do not allow the circumstances of life or other peoples’ words, or other peoples’ thoughts, or other peoples’ beliefs, or anything else, to deprive you of the privilege of making your mind whatever you want it to be. That is the greatest form of self-discipline
