The difficulty problem

Oh, it is so hard. I'm studying Delegates and Events in C#/.NET. I don't know why I can't understand it though I read it over and over again many times. It confuses my mind. Maybe I need some relaxes. I'm going to make a big, important decision in my study at school. When I passed national exam in 2008, I chose Software Engineering as my future career. But now, it has changed a little bit, I intend to study Computer Science. Hope that it will be more good for me. I don't want to waste my time and my energy.