Here are some leadership notes from John Ortberg's talk at the Catalyst West Leadership Conference.
There is a God and it's not you – As leaders work hard to do great things in the world and seek to serve, it's important to remember that they are human. They aren't the best person in the world, and they certainly aren't the best leader. No matter what they do, there is always someone out there who is better. There's always a better speaker, leader, writer, politician, etc.
Self-serving bias – I've heard this term many times before, but this was the first in a leadership context. A self-serving bias is when we think that we are something that we aren't. Example: Because I am me, and me is what I know, I have a tendency to think things about myself which aren't true. So I might think that I'm a great cook, but since I'm the one cooking for myself, then I can't really tell if the food is good or not. This can transfer to leaders cause they might think they are a better leader than they actually are. Watch out for the self serving bias!
So, ask the people around you what you're really like. We don't get a accurate view when we look at ourselves. So take the time to ask people around you for feedback on who you are and what you do. Ask them what you do well and what you can improve. Ask them to be brutally honest with you.