Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
Things turn out best for the people who make the best of the way things turn out.
If a thing is useful they call it work, if useless they call it play. One is as hard as the other. One can be just as much a game as the other.
Everything can be taken from a man but one thing: the last of the human freedoms — to choose one's attitude in any given set of circumstances, to choose one's own way.
It's not what happens to you, but how you react to it that matters.