Discipline is sacrificing short-term pleasure for long-term gain.

Play the long game.

Human beings inherently desire pleasure. We are wired to seek it out. And not only pleasure, but short-term pleasure. That is because of how humans have evolved – basically to respond to immediate threats or desires, but at the expense of long-term gradual warnings or gain. For example, you know you need to go to the gym, but you want that one piece of …