The best advice my dad ever gave me is that acting is believing. Acting is not acting. It isn't putting on a face and dancing around in a mask. It's believing that you are that character and playing him as if it were a normal day in the life of that character.
My dad never told me that when you audition, you might not get the role. He wanted to wait until my first disappointment to tell me.
I like normal stuff people fear - like spiders and heights. I'm frightened by the unknown, by things that are hard to figure out and get a grip on.