During the interview, Dyer was describing the ego as the part of ourselves that identifies with things, with our roles, or with how others view or think of us. We ARE more than our things, our titles, or others' ideas and beliefs about us--it can be hard to keep this truth in focus when so much of this culture tries to blind us from it. It is so important to try to live our lives and make decisions from a place of consciousness and peace, a place that recognizes the inherent worth within us and others. Any other decision can easily be based from ego.
Dyer also described ego as E.G.O.: Edging God Out. Any time we are making decisions from ego, we are essentially edging God out. This description really resonated with me. As Oprah says, I had an "ah ha" moment when he described this. I will definitely be keeping this in mind in my decision making process.
Peace be with you.