The truth of your instincts is the root of your foundation.
Courage means willing to risk everything.
Find in yourself those human things which are universal.
The truth of ourselves is the root of our acting.
You can't learn to act unless you're criticized. If you tie that criticism to your childhood insecurities you'll have a terrible time. Instead, you must take criticism objectively, pertaining it only to the work being done.
Don't be an actor. Be a human being who works off what exists under imaginary circumstances.