Once you understand what you purpose is and what its importance is in the context of the greater good, you understand that you have an obligation to protect your purpose in the interest of the greater good. Your purpose has been entrusted to you for a reason. You are therefore responsible for ensuring that you deliver value. Somebody out there needs you to live your purpose.
We are often quite unaware of how our belief systems are influenced by various external factors, and how those beliefs may impact on our decisions and actions. Not interrogating information that we are being fed on a daily basis could quite easily lead to a skewed view of reality, which may lead to inappropriate decisions or actions. Reflecting on how we have come to our conclusions should be standard practice for leaders.