Elad Gil, former Twitter VP, wrote a hell of a post about hiring great BD people. It is worth the read. Besides the focus on hiring, as a BD person, it is a great article that helps you reflect on what you are good at and what you need to work on to be a better employee.
As I read it I definitely identified with some of the good and bad qualities. This post is one I will keep handy to help me improve.
You can find the post here.