It's mainly about working hard and proving to people you're serious about it and stretching yourself and learning. The mistake a lot of actors make particularly young ones is allowing themselves to feel that they're the finished articles the bee's knees and it's not true.
Libraries allow children to ask questions about the world and find the answers. And the wonderful thing is that once a child learns to use a library the doors to learning are always open.
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It is always good to explore the stuff you don't agree with to try and understand a different lifestyle or foreign worldview. I like to be challenged in that way and always end up learning something I didn't know.