There's no such thing as nothing.
Acting is fun. Don't let that get around.
The foundation of acting is the reality of doing.
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.
Find in yourself those human things which are universal.
Transfer the point of concentration to some object outside of yourself - another person, a puzzle, a broken plate that you are gluing.