Will Power? Effort?

Why is it that I have such great will power when it comes to sitting on my bed and watching movies for hours on end? But when it comes to writing an essay there is nothing there. No will. It seems like I have less and less will power each day. Though today I realized, even though I'm not paying for these courses I am taking, unlike university, I still chose to be in them. Even though I am forced to go to that building 5 days a week, I am not forced to be sitting in the particular classrooms I am in. I chose them, I enjoy most of them. I strangely enjoy all of them to some extent. All I really need to graduate is one english credit and one consumer math credit. So many other classes that are more difficult, more involved and that take so much effort. Why? I ask myself everyday. Maybe one day my effort will make a difference, if not for someone else, at least my later life will be easier and more enjoyable