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.
Dale CarnegieAnyone can do his work, however hard, for one day. Anyone can live sweetly, patiently, lovingly, purely, till the sun goes down. And this is all that life really means.
Dale CarnegieMen of age object too much, consult too long, adventure too little, repent too soon, and seldom drive business home to the full period, but content themselves with a mediocrity of success.
Dale Carnegie