The Two Types of Christians

There are two types of people who come to Christianity: The first type is the person who knows that he's living life the wrong way, he knows that what the world sold him is junk food, and, like a patient who goes to a doctor knowing he needs to change his diet and lifestyle habits to be physically healthy, this Christian knows that he needs to change himself in order to fill the holes in his life and live life to the fullest.  Then there's the other kind, the kind who thinks that nothing about them has to change, but that Christianity is about changing everyone and everything around them.  Guess which group Christianity works for and which group it doesn't?