Once you start a working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest.

I will not be discouraged by failure I will not be elated by success.

The great question is not whether you have failed, but whether you are content with failure.

They who have conquered doubt and fear have conquered failure.

Even when you have doubts, take that step. Take chances. Mistakes are never a failure - they can be turned into wisdom.

There is no loneliness greater than the loneliness of a failure. The failure is a stranger in his own house.

Defeat is not the worst of failures. Not to have tried is the true failure.

Failure is instructive. The person who really thinks learns quite as much from his failures as from his successes.

Failure is nature's plan to prepare you for great responsibilities.

I don't believe in failure. It is not failure if you enjoyed the process.