To be a superstar you must be a leader. We know that leaders are readers. So give your team a test. Provide them with a document to read and invite them to contact you to discuss how you can use the information to improve your businesses. The ones who respond will be your potential superstars.
Its that simple. But remember, this is a test for you also. Have you read thee document so that you can give intelligent input to the followup conversation?
