Imagine yourself as a living brand.
What makes you unique or different from everyone else? What are the keywords that come to mind when people speak about you when you are not in the room? What do you want to be known for? How are you adding value to the world? Your personal brand is basically a sum total of every aspect of your personality and communication. Your personal brand is what makes you stand out and what makes you compelling to the world.
A simple formula sums it up: how you look + how you act + how you speak = your personal brand.
To create and build a clear personal brand, read this article from Entrepreneur.com