I think that ego-driven leaders will be a thing of the past because the masses are tired.
I do get angry some time, but if I let that feeling take over it would only cloud my thinking and disable me from making the right decision when it counts the most. I just try to think about my mother, children, God, and of course my freedom.
It takes a lot of energy to be negative. You have to work at it. But smiling is painless. I'd rather spend my energy smiling.