“It isn’t what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.
It is the way we react to circumstances that determine our feelings. Happiness doesn’t depend on any external conditions, it is governed by our mental attitude.
Remember, 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.“
How To Win Friends and Influence People, Dale Carnegie, p.67