I believe that acting in any medium is the same thing, it's discovering the truth in where you are.
To be trained in karate is something because karate is a vicious thing. If you are any good at it, you can kill somebody with it. It is a vicious way to fight.
Being an actor gives you a chance to play all kinds of roles, very moving and dramatic on one project, silly and girlish on another. That's the most interesting thing out this business, you get to keep reinventing yourself.