Substance addiction is likely what most people think of first when they think of addiction in general. However, there are also compulsive behavioral addictions that some people struggle with.
Behavioral addictions can also be known as process addictions. A process addiction causes a person to feel a high or provides a psychological reward when they engage in certain behavior (e.g., shopping or gambling). Following that high, they might feel guilt or shame. Learn more by searching through these process addiction related topics.