Delayed gratification—the ability to resist an immediate reward in favor of a larger, later one—sits at the heart of self-regulation and long-term decision-making. Rooted in behavioral economics, neuroscience, and clinical psychology, this capacity shapes everything from financial choices to health behaviors. Impulse control is the real-time mechanism that enables delayed gratification: the ability to pause, evaluate, and resist automatic urges when they arise. Understanding temporal discounting (how we devalue future rewards as delay increases) reveals why immediate temptations often win, while hyperbolic discounting explains the time-inconsistent preferences that lead us to plan virtuously but act impulsively. The techniques in this cheat sheet transform abstract willpower into concrete, research-backed strategies—pre-commitment devices that lock in future behavior, pause techniques that interrupt reactive impulses, and cognitive reframing that reshapes how we perceive both the wait and the reward. Mastery here is not about innate self-discipline; it's about designing environments, habits, and mental models that make delay feel less costly and patience more rewarding.