Habits are invisible actions that shape our daily lives. According to psychologists, about forty percent of what we do every day is not a decision, but a habit. A habit has three parts: a cue, a routine, and a reward. The cue is the trigger that tells your brain to start the action. The routine is the action itself. The reward is the feeling of satisfaction that makes your brain remember the habit for the future. If you want to break a bad habit, you cannot just delete it. You must keep the same cue and the same reward, but change the routine. For example, if you eat chocolate when you feel stressed (the cue) to feel relaxed (the reward), you should try walking instead of eating when stress hits. Building a new habit takes time and patience, but understanding how they work makes the process much easier.