What is an addiction? What causes an addiction ? People with an addiction do not have control over what they are doing, taking or using. Their addiction can reach a point at which it is harmful. Addiction are not only physical things which can be consumed, like drugs, alcohol, coffee etc., also may include abstract things as gambling, computer use, exercise, sex, internet use, and many others. Addiction may refer to a substance dependence or behavioral addiction. Addiction in general can lead us to feelings of guilt, shame, hopelessness, dispair, failure, anxiety etc. There is a difference between a habit and an addiction. An addiction is a phychological component, the person is unable to control it; but a habit, the person can choose to stop it or not. Note: some informations were taken from the internet.