Can you describe what you would do or have done when faced with an obstacle in an essential project?

"I once had an obstacle with a stakeholder when setting up a manufacturing cell with a new layout that streamlined processes. The resistance pretty much came from unclear goals and responsibilities within the team I approached. I knew it was important to not get emotional and complain since that could hurt future projects with this manager and his team. I approached it from every project management trick imaginable, but I finally had to realize that executive management, including the president of the company, were the only ones that could overcome the obstacles and move forward. Formal meetings then ensued to work it all out. The project was large-scale, and after that first experience, I made sure that we had stakeholder buy in and more experienced and prepared teams. After doing so each time, we never faced that obstacle again in the five years of transforming the manufacturing floor."