Alternative Paths To An Encore Career

"What is the key to crafting a meaningful encore in your worklife? Do you need to be an extraordinary person with exceptional resources motivated by a desire to change the world after closing out your first career? Or is some kind of a second act for the greater good available to us all once we hit our 50s or 60s?..." 
http://www.forbes.com/sites/nextavenue/2014/11/18/alternative-paths-to-an-encore-career/