Enthusiasm is that ingredient of vitality mixed with a firm belief in what you are doing that ensures the success of any project you undertake.
Dale CarnegiePeople are not interested in you. They are not interested in me. They are interested in themselves - morning, noon and after dinner.
Dale CarnegieThere is only one excuse for a speaker's asking the attention of his audience: he must have either truth or entertainment for them.
Dale CarnegieRemember, happiness doesn't depend upon who you are or what you have; it depends solely upon what you think. So start each day by thinking of all the things you have to be thankful for. Your future will depend very largely on the thoughts you think today. So think thoughts of hope and confidence and love and success.
Dale Carnegie