Ultimately, there is no way to be sure that the so-called right decision has been made before it has been made and acted on. All you can do is ensure that the process of decision-making is deliberately and painstakingly executed. That doesn't guarantee the best decision, but it sure makes it a lot more likely.
Recent seasons have seen a dependable stream of first-rate Irish plays making their way to Broadway and off. The newest hails not from the old country but from Bronx-born scribe John Patrick Shanley. Outside Mullingar is one of those generations-of-country-folk-on-the-old-farm plays, and it's dandy.