In Amy Morin's book, 13 THINGS MENTALLY STRONG PEOPLE DON'T DO, we are advised that:
Mentally strong people don't give up after failure.
Amy's words: Every failure is a chance to improve. Even the greatest entrepreneurs are willing to admit that their early efforts invariably brought many failures. Mentally strong people are willing to fail again and again, if necessary, as long as the learning experience from every "failure" can bring them closer to their ultimate goals.
My words: Mental strength is a valuable asset. Amy has written an amazing book that leads the reader to achieving greater mental strength in 13 chapters dedicated to her list of 13 things to avoid.