We can train people to be competent, but excellence is a result of an individual being given the freedom to make mistakes, to learn, and truly incented to grow without fear of retribution – not without accountability but without loss of reputation. Excellence develops when an individual recognizes his own adequacies and inadequacies, and is willing to grow by following, learning, and failing.
If “Failure is not an option!” – then the best you will get is competence.
If you must “prevent them from making mistakes” – then the best you will get is competence.
If the following the process is more important than developing the people – then the best you will get is competence.