Activism begins with finding your passion:

One’s calling in life, says the author and minister Frederick Buechner, is “that place where your deep gladness and the world’s deep hunger meet.” To find your calling in an encore career, ask yourself: 
  • What need in the world will ignite the passions in my heart, tap my natural gifts, educational background and skills, and bring new vitality to all of life? 

You might start by finding a quiet spot and pondering three not-so-simple questions:
  1. Who am I?
  2. How do I function best?
  3. What am I here for?
Don’t ask what the world needs.  Ask what makes me come alive?  And, go do it!  
Because what the world needs is people who have come alive. 
Howard Thurman