Leaders are learners. Disciples are learners. To be a Christian leader means that you are a life-long learner. The hunger for knowledge is essential to leadership.
I am always learning something new, whether I want to or not. That said, it is critical to the health of any leader that we continue to learn new things. Healthy leaders are always seeking to intentionally new. The new things we learn do not need to be, nor should they be, always related to our ministry work. Instead, learning things in a variety of fields sharpens the mind, creates new ways to connect with others. It can also increase empathy.