1. When something goes wrong, do [not] "try, try again". Instead, pull back, pause, and carefully work out what organizational shortcomings produced the failure. The correct those deficiencies. Only after that return to the assault. (One of Parkinson's laws).
2. There's no success like failure / and failure's no success at all (Bob Dylan).
3. To err from the right path is common to mankind. (Sophocles).