Addiction is a condition where a person feels a strong, uncontrollable need to engage in a behavior or consume a substance, such as drugs or alcohol. This can lead to negative consequences in their life, affecting relationships, work, and health. Despite knowing these risks, individuals often find it difficult to stop or reduce their use. The brain plays a significant role in addiction, as it releases dopamine, a chemical that creates feelings of pleasure. Over time, the brain becomes reliant on the substance or behavior to feel good, making it harder for the person to find joy in everyday activities without it.