Purpose is the quality we choose to shape our lives around.
Without death, our lives would have no meaning. Death frames our end for us and also puts a value on things.
People don't choose their calling, it chooses them.
Our world is incomplete until each one of us discovers what moves us - our passion. No other person can hear our calling. We must listen and act on it for ourselves.
Information does not change behavior. Practices do.
The original Greek word for enthusiasm meant "to be filled with God." When we are "filled with God" we tend to lead on purpose.