You Are What You Think You Are - The Magic of Thinking Big by David J. Shwartz

It's not a new concept but it's a powerful one. This one thing could quite literally change the entire direction of your career/life. If you believe yourself to be someone from a high level, your actions and image will directly reflect that.  Simply put, what others think you are is directly affected by the way you think of yourself.  Follow me on instagram: @mijanibal