I like to think of discipline as a way to keep our attention focused on what we want in life. When attention is focused on what we want, the emotions and body tend to follow. Just like love, when we fall for someone, we tend to focus. Our attention is like a flashlight beam in a dark room. What we focus the beam on, we emotionally respond to and move our body accordingly. Take example Your studies, are content with what you doing? If so, that's the thing to focus on. Keep it in mind and strive for it. This is how people view discipline.