You are likely asking yourself what could be great about failing. Failing means … well … that you fizzled, that you didn't accomplish the outcomes/results you needed and that things didn't turn out as you trusted/hoped.
Disappointment is a learning opportunity, yet just on the off chance that you let it be. As a rule disappointment is seen as something that should to be covered-up/hidden and kept away from and never confessed to. How frequently in your organization do you think people commit the same mistakes again and again because nobody ever admits to the oversight/mistake or inspects/examines why the mistake was made.
Would it not be more practical/costly and time compelling if when a mistake is at first made that it results in a learning opportunity? Every time something doesn't work out as expected, consider you could do next time to get the results you need? What was absent/missing? What should be included? What requirements to change?
Once the answers/responses to the questions have been altogether investigated with a receptive outlook and no assumptions, then take those learnings and apply them to what's to future. Each organization should to consistently endeavor to learn and improve. Because a specific method works doesn't mean it is the best one. Endeavor to make improve.
You should now be able to see where you did something differently to achieve the successful result. Your next step is to put together a plan on how you are going to repeat your past successes. Your plan should include each of those necessary steps that resulted in the success.