Every effort should be made to help the child to have confidence in itself. This can be done by removing from its nature confusion, indecision, and doubt, for these are the cause of all failure in life. Self-confidence and single-mindedness are the key to all success. The child should be encouraged to think or act not only because it is taught to do so, but because it knows already that it is right to think, speak, or act in a certain way; otherwise it will only be a machine which works without knowledge of the purpose or result of the work. The whole tragedy of life is that so many minds work mechanically like machines; only rarely some few act with knowledge, certainty, and self-confidence.