Positive thinking leads us to learn from our mistakes. If you do something wrong or was not successful as you hope.That is not wrong,you make fully. Open mind, and accept the truth. Review to see if there are steps you went wrong? In order to restart it for the better. If you blame yourself, why do not succeed, it will make you feel tired and discouraged. Just adjust the new attitude will make you see it in a different angle . Positive thinking will let you know the deal with obstacles or difficulties that passed into everyday life.