The world is made up for the most part of morons and natural tyrants, sure of themselves, strong in their own opinions, never doubting anything.
Find something that you're really interested in doing in your life. Pursue it, set goals, and commit yourself to excellence. Do the best you can.
Arnold Schwarzenegger, I don't know if you'd call him a great actor, but he's amazing in terms of his presence, and he is interesting enough that you want to watch him.

