If you think you’re beaten, you are:
If you think you dare not, you don’t;
If you’d like to win, but think you can’t
It’s almost a cinch you won’t.
If you think you will lose, you’re lost;
For out in the world we find,
Success begins with a [person’s] will,
It’s all in the state of mind.
If you think you’re outclassed, you are;
You’ve got to think high to rise.
You’ve got to hustle before
You can ever win a prize.
Life’s battles don’t always go
to the stronger or faster [person],
But sooner or later the [one] who wins
Is the one who thinks [she] can.
(Anonymous as quoted by Tom Matthews in Aim For The Heart)