" Without goals and aspirations, discipline is going to feel like pointless suffering. Therefore, our lapses in discipline often come when we aren’t connected to our goals. That’s where the third question comes in. It brings clarity to what you are trying to accomplish and the entire reason you are suffering or exercising uncomfortable discipline. These are the vegetables, so what am I getting for dessert? Essentially, you’re being disciplined and taking on discomfort now so that you can experience some personal benefit in the future. The disciplined behavior is the vegetables, and the payoff is the dessert. It’s easy to falter if you forget what your payoff is. "

― Peter Hollins , The Science of Self-Discipline: The Willpower, Mental Toughness, and Self-Control to Resist Temptation and Achieve Your Goals