How do I "practice"?

"Practicing Authenticity" What is that and how do you do it? The definition of authenticity is "genuine or sincere". Most of us, myself the worst offender, show people what we think they want to see. Who doesn't want to be liked? We hide our faults, our weaknesses, our hurts and (all too easily) become "happy, plastic people". I don't want to be a plastic person anymore. My goal for 2009 is to find out how to be "authentic" while still being kind, caring, and yes, liked. I might just have some fun along the way.