“Remember,
happiness doesn’t depend upon
who you are
or what you have,
it depends solely upon
what you think.”
Dale Breckenridge Carnegie (Nov. 24 1888 – Nov. 1 1955) American writer, lecturer & developer of courses in self-improvement, salesmanship, corporate training, public speaking & interpersonal skills. The author of How to Win Friends and Influence People, first published in 1936,.. Source
