Leadership roles can often be a huge source of insecurity."Do they respect me?"
"What are they saying when I'm not around?"
"Am I living up to their expectations?"
It's a difficult place to be in, but trying to 'keep up appearances' doesn't help anyone.
At some point we're taught, we just simply assume, that leaders should never give any sign that they are "unaware" of anything. So we futilely try and act like we know everything, never admitting that we may have some areas outside of our expertise.
A more effective and less frustrating way of leading is to do less telling, and do more asking. Ask questions of the people around you. Yes, it may be admitting that you don't know something, but no one likes a know-it-all anyway.
If you aren't sure of something, ask. If you are pretty sure of something, ask. If you are absolutely, positively sure of something...still ask. Asking = including and including is good.