Dale Harbison Carnegie (November 24, 1888 – November 1, 1955) was an American writer and lecturer and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. One of the core ideas in his books is that it is possible to change other people's behavior by changing one's behavior toward them.
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The person who seeks all their applause from outside has their happiness in another's keeping .
Remember happiness doesn't depend upon who you are or what you have, it depends solely on what you think.
When dealing with people remember you are not dealing with creatures of logic but creatures of emotion.
Flaming enthusiasm backed up by horse sense and persistence is the quality that most frequently makes for success.
We all have possibilities we don't know about. We can do things we don't even dream we can do.