When you have a challenge and the response is equal to the challenge, that's called 'success'. But once you have a new challenge, the old, once-successful response no longer works. That's why it is called a 'failure'.
Stephen CoveySynergy: The combined effect of individuals in collaboration that exceeds the sum of their individual effects.
Stephen CoveyBe a function of your values rather than a function of the impulse or desire of any given moment.
Stephen Covey