Human Design (HD) is a spiritual tool that looks at various spiritual traditions and modalities, including the positioning of the planets when you were born, to create a map of your body and how energy flows within it. Your chart is like a map of your soul that shows you how you energetically function, how to make decisions best, how you learn best, how you will most effectively have your message heard, the greater themes you’re going to face in life, and the greater role you’re designed to embody in the collective.
Your human design type is like your aura (aka the unique energy you bring to the world) - and is determined based on the particular balance you have of defined and undefined energetic centres in your chart.