The biggest lesson I have learned is the stupendous importance of what we think. If I knew what you think, I would know what you are, for your thoughts make you what you are; by changing our thoughts, we can change our lives.
Dale CarnegieHow often we all have heard speakers begin by calling the attention of the audience to their lack of preparation or lack of ability. If you are not prepared, the audience will probably discover it without your assistance.
Dale Carnegie