Although I love all genres, I really love to play in two main arenas: Comedy and Thriller/Horror. In either genre I love playing flawed, layered characters that are actively fighting to achieve something in the story.
You have to be ready to go through peaks and valleys along the way. Be ready to sacrifice some of the things in life that are considered normal for most people for the first while. And understand the business of the film industry, because studying the art and your craft alone isn't enough anymore.