To endure, up to the point of hurting – that is “passion”. Understanding the driving force that controls my behavior and determines my attitude towards any particular cause is to be passionate about something.
You find them clustered together in pockets of commitment where they honestly search for ways to create a better world for the benefit of all around them.
Whatever the cause may be, they provide the energy for helping the victims of Human Trafficking, saving the Rhino or rally for the providing of Malaria nets in rural Africa. These are the people who already started on the passion path
Getting to the point where awareness becomes caring, is when you can start to direct your purpose in life. Once the willingness to endure discomfort and preparedness to engage in effort for the sake of others or the advantage of your surroundings sets in, you begin to understand your purpose.