Change your thoughts and you change your world. Norman Vincent Peale.
There is no such thing as failure, only different results brought about by your actions.
It's your belief that it's harder to be successful and easier to fail that keeps you from running from failure and struggling for success. George Lavenia, What You Think is What You Get.
He who has conquered doubt and fear has conquered failure.
As he thinks, so he is; as he continues to think, so he remains.
A man is limited only by the thoughts which he chooses. James Allen, As A Man Thinketh